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248020992 = 21532292
BaseRepresentation
bin11101100100010…
…00000000000000
3122021200202211200
432302020000000
51001443132432
640335541200
76101100162
oct1662100000
9567622750
10248020992
1111800192a
126b08a800
133c4cb9ab
1424d22932
1516b92a7c
hexec88000

248020992 has 144 divisors (see below), whose sum is σ = 742052805. Its totient is φ = 79822848.

The previous prime is 248020991. The next prime is 248020999. The reversal of 248020992 is 299020842.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 2 ways, for example, as 247873536 + 147456 = 15744^2 + 384^2 .

It is a tau number, because it is divible by the number of its divisors (144).

It is an ABA number since it can be written as A⋅BA, here for A=2, B=11136.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (248020991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 8552434 + ... + 8552462.

Almost surely, 2248020992 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 248020992

248020992 is an abundant number, since it is smaller than the sum of its proper divisors (494031813).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

248020992 is an frugal number, since it uses more digits than its factorization.

248020992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94 (or 34 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 248020992 is about 15748.6822305868. The cubic root of 248020992 is about 628.2938568229.

The spelling of 248020992 in words is "two hundred forty-eight million, twenty thousand, nine hundred ninety-two".

Divisors: 1 2 3 4 6 8 9 12 16 18 24 29 32 36 48 58 64 72 87 96 116 128 144 174 192 232 256 261 288 348 384 464 512 522 576 696 768 841 928 1024 1044 1152 1392 1536 1682 1856 2048 2088 2304 2523 2784 3072 3364 3712 4096 4176 4608 5046 5568 6144 6728 7424 7569 8192 8352 9216 10092 11136 12288 13456 14848 15138 16384 16704 18432 20184 22272 24576 26912 29696 30276 32768 33408 36864 40368 44544 49152 53824 59392 60552 66816 73728 80736 89088 98304 107648 118784 121104 133632 147456 161472 178176 215296 237568 242208 267264 294912 322944 356352 430592 475136 484416 534528 645888 712704 861184 950272 968832 1069056 1291776 1425408 1722368 1937664 2138112 2583552 2850816 3444736 3875328 4276224 5167104 6889472 7750656 8552448 10334208 13778944 15501312 20668416 27557888 31002624 41336832 62005248 82673664 124010496 248020992