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68290912 = 254152051
BaseRepresentation
bin1000001001000…
…00100101100000
311202111112112001
410010200211200
5114440302122
610435413344
71456314604
oct404404540
9152445461
1068290912
1135603a78
121aa54254
13111c0931
1490d9504
155ede527
hex4120960

68290912 has 24 divisors (see below), whose sum is σ = 137729592. Its totient is φ = 33312000.

The previous prime is 68290909. The next prime is 68290913. The reversal of 68290912 is 21909286.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68290913) 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 3 ways as a sum of consecutive naturals, for example, 24714 + ... + 27337.

It is an arithmetic number, because the mean of its divisors is an integer number (5738733).

Almost surely, 268290912 is an apocalyptic number.

It is an amenable number.

68290912 is an abundant number, since it is smaller than the sum of its proper divisors (69438680).

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

68290912 is a wasteful number, since it uses less digits than its factorization.

68290912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52102 (or 52094 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 37.

The square root of 68290912 is about 8263.8315568506. The cubic root of 68290912 is about 408.7467421425.

The spelling of 68290912 in words is "sixty-eight million, two hundred ninety thousand, nine hundred twelve".

Divisors: 1 2 4 8 16 32 41 82 164 328 656 1312 52051 104102 208204 416408 832816 1665632 2134091 4268182 8536364 17072728 34145456 68290912