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68231432 = 23192329673
BaseRepresentation
bin1000001000100…
…10000100001000
311202101111221002
410010102010020
5114431401212
610434234132
71455646313
oct404220410
9152344832
1068231432
1135573315
121aa25948
131119c839
1490c197a
155ecbac2
hex4112108

68231432 has 64 divisors (see below), whose sum is σ = 145584000. Its totient is φ = 29804544.

The previous prime is 68231419. The next prime is 68231437. The reversal of 68231432 is 23413286.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a junction number, because it is equal to n+sod(n) for n = 68231395 and 68231404.

It is not an unprimeable number, because it can be changed into a prime (68231437) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 101048 + ... + 101720.

It is an arithmetic number, because the mean of its divisors is an integer number (2274750).

Almost surely, 268231432 is an apocalyptic number.

It is an amenable number.

68231432 is an abundant number, since it is smaller than the sum of its proper divisors (77352568).

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

68231432 is a wasteful number, since it uses less digits than its factorization.

68231432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 750 (or 746 counting only the distinct ones).

The product of its digits is 6912, while the sum is 29.

The square root of 68231432 is about 8260.2319580021. The cubic root of 68231432 is about 408.6280376306.

The spelling of 68231432 in words is "sixty-eight million, two hundred thirty-one thousand, four hundred thirty-two".

Divisors: 1 2 4 8 19 23 29 38 46 58 76 92 116 152 184 232 437 551 667 673 874 1102 1334 1346 1748 2204 2668 2692 3496 4408 5336 5384 12673 12787 15479 19517 25346 25574 30958 39034 50692 51148 61916 78068 101384 102296 123832 156136 294101 370823 448891 588202 741646 897782 1176404 1483292 1795564 2352808 2966584 3591128 8528929 17057858 34115716 68231432