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248390880 = 2535517481
BaseRepresentation
bin11101100111000…
…10010011100000
3122022101120020020
432303202103200
51002042002010
640351513440
76104200443
oct1663422340
9568346206
10248390880
11118234821
126b228880
133c5cb16a
1424dbb65a
1516c17470
hexece24e0

248390880 has 48 divisors (see below), whose sum is σ = 782432784. Its totient is φ = 66237440.

The previous prime is 248390861. The next prime is 248390881. The reversal of 248390880 is 88093842.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (248390881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 258261 + ... + 259220.

It is an arithmetic number, because the mean of its divisors is an integer number (16300683).

Almost surely, 2248390880 is an apocalyptic number.

248390880 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

248390880 is an abundant number, since it is smaller than the sum of its proper divisors (534041904).

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

248390880 is a wasteful number, since it uses less digits than its factorization.

248390880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 517499 (or 517491 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 42.

The square root of 248390880 is about 15760.4213141654. The cubic root of 248390880 is about 628.6060386295.

The spelling of 248390880 in words is "two hundred forty-eight million, three hundred ninety thousand, eight hundred eighty".

Divisors: 1 2 3 4 5 6 8 10 12 15 16 20 24 30 32 40 48 60 80 96 120 160 240 480 517481 1034962 1552443 2069924 2587405 3104886 4139848 5174810 6209772 7762215 8279696 10349620 12419544 15524430 16559392 20699240 24839088 31048860 41398480 49678176 62097720 82796960 124195440 248390880