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68893568 = 274312517
BaseRepresentation
bin1000001101100…
…11101110000000
311210122011012122
410012303232000
5120114043233
610500343412
71464404612
oct406635600
9153564178
1068893568
1135985837
121b0a4b68
1311372033
149214db2
1560acd98
hex41b3b80

68893568 has 32 divisors (see below), whose sum is σ = 140451960. Its totient is φ = 33643008.

The previous prime is 68893567. The next prime is 68893597. The reversal of 68893568 is 86539886.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68893567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 755 + ... + 11762.

Almost surely, 268893568 is an apocalyptic number.

It is an amenable number.

68893568 is an abundant number, since it is smaller than the sum of its proper divisors (71558392).

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

68893568 is a wasteful number, since it uses less digits than its factorization.

68893568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12574 (or 12562 counting only the distinct ones).

The product of its digits is 2488320, while the sum is 53.

The square root of 68893568 is about 8300.2149369760. The cubic root of 68893568 is about 409.9455965887.

The spelling of 68893568 in words is "sixty-eight million, eight hundred ninety-three thousand, five hundred sixty-eight".

Divisors: 1 2 4 8 16 32 43 64 86 128 172 344 688 1376 2752 5504 12517 25034 50068 100136 200272 400544 538231 801088 1076462 1602176 2152924 4305848 8611696 17223392 34446784 68893568