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68602688 = 2671113921
BaseRepresentation
bin1000001011011…
…00101101000000
311210002101012022
410011230231000
5120030241223
610450221012
71462053560
oct405545500
9153071168
1068602688
11357a7240
121ab84768
131129c80b
14917ada0
156051ac8
hex416cb40

68602688 has 56 divisors (see below), whose sum is σ = 169737024. Its totient is φ = 26726400.

The previous prime is 68602687. The next prime is 68602691. The reversal of 68602688 is 88620686.

It is a tau number, because it is divible by the number of its divisors (56).

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68602687) 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, 2033 + ... + 11888.

Almost surely, 268602688 is an apocalyptic number.

It is an amenable number.

68602688 is an abundant number, since it is smaller than the sum of its proper divisors (101134336).

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

68602688 is a wasteful number, since it uses less digits than its factorization.

68602688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13951 (or 13941 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 44.

The square root of 68602688 is about 8282.6739643668. The cubic root of 68602688 is about 409.3678300553.

The spelling of 68602688 in words is "sixty-eight million, six hundred two thousand, six hundred eighty-eight".

Divisors: 1 2 4 7 8 11 14 16 22 28 32 44 56 64 77 88 112 154 176 224 308 352 448 616 704 1232 2464 4928 13921 27842 55684 97447 111368 153131 194894 222736 306262 389788 445472 612524 779576 890944 1071917 1225048 1559152 2143834 2450096 3118304 4287668 4900192 6236608 8575336 9800384 17150672 34301344 68602688