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1288048449312 = 253219235388971
BaseRepresentation
bin10010101111100101101…
…010111001011100100000
311120010200022101202211200
4102233211222321130200
5132100410400334222
62423415444241200
7162026020113312
oct22574552713440
94503608352750
101288048449312
11457292852279
121897709a0200
1394601cc7261
14464b017d7b2
1523789a74eac
hex12be5ab9720

1288048449312 has 72 divisors (see below), whose sum is σ = 3855671361360. Its totient is φ = 406752140160.

The previous prime is 1288048449283. The next prime is 1288048449313. The reversal of 1288048449312 is 2139448408821.

1288048449312 is a `hidden beast` number, since 1 + 28 + 80 + 48 + 4 + 493 + 12 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is not an unprimeable number, because it can be changed into a prime (1288048449313) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 117689014 + ... + 117699957.

It is an arithmetic number, because the mean of its divisors is an integer number (53550991130).

Almost surely, 21288048449312 is an apocalyptic number.

1288048449312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1288048449312 is an abundant number, since it is smaller than the sum of its proper divisors (2567622912048).

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

1288048449312 is a wasteful number, since it uses less digits than its factorization.

1288048449312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235389006 (or 235388995 counting only the distinct ones).

The product of its (nonzero) digits is 3538944, while the sum is 54.

The spelling of 1288048449312 in words is "one trillion, two hundred eighty-eight billion, forty-eight million, four hundred forty-nine thousand, three hundred twelve".

Divisors: 1 2 3 4 6 8 9 12 16 18 19 24 32 36 38 48 57 72 76 96 114 144 152 171 228 288 304 342 456 608 684 912 1368 1824 2736 5472 235388971 470777942 706166913 941555884 1412333826 1883111768 2118500739 2824667652 3766223536 4237001478 4472390449 5649335304 7532447072 8474002956 8944780898 11298670608 13417171347 16948005912 17889561796 22597341216 26834342694 33896011824 35779123592 40251514041 53668685388 67792023648 71558247184 80503028082 107337370776 143116494368 161006056164 214674741552 322012112328 429349483104 644024224656 1288048449312