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68106256 = 2431612251
BaseRepresentation
bin1000000111100…
…11100000010000
311202011011012221
410003303200100
5114413400011
610431430424
71454615341
oct403634020
9152134187
1068106256
1135498269
121a985414
131115787a
14908c0c8
155ea4971
hex40f3810

68106256 has 40 divisors (see below), whose sum is σ = 138507008. Its totient is φ = 32400000.

The previous prime is 68106223. The next prime is 68106257. The reversal of 68106256 is 65260186.

It is not an unprimeable number, because it can be changed into a prime (68106257) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29131 + ... + 31381.

Almost surely, 268106256 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 68106256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69253504).

68106256 is an abundant number, since it is smaller than the sum of its proper divisors (70400752).

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

68106256 is a wasteful number, since it uses less digits than its factorization.

68106256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2351 (or 2345 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 68106256 is about 8252.6514527151. The cubic root of 68106256 is about 408.3779977614.

The spelling of 68106256 in words is "sixty-eight million, one hundred six thousand, two hundred fifty-six".

Divisors: 1 2 4 8 16 31 61 62 122 124 244 248 488 496 976 1891 2251 3782 4502 7564 9004 15128 18008 30256 36016 69781 137311 139562 274622 279124 549244 558248 1098488 1116496 2196976 4256641 8513282 17026564 34053128 68106256