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68976402 = 23112345439
BaseRepresentation
bin1000001110001…
…11111100010010
311210210100211120
410013013330102
5120124221102
610502223110
71465201245
oct407077422
9153710746
1068976402
1135a31aa0
121b124a96
13113a0951
14923725c
1560c76bc
hex41c7f12

68976402 has 32 divisors (see below), whose sum is σ = 157040640. Its totient is φ = 19992720.

The previous prime is 68976389. The next prime is 68976407. The reversal of 68976402 is 20467986.

It is not an unprimeable number, because it can be changed into a prime (68976407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21202 + ... + 24237.

It is an arithmetic number, because the mean of its divisors is an integer number (4907520).

Almost surely, 268976402 is an apocalyptic number.

68976402 is an abundant number, since it is smaller than the sum of its proper divisors (88064238).

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

68976402 is a wasteful number, since it uses less digits than its factorization.

68976402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45478.

The product of its (nonzero) digits is 145152, while the sum is 42.

The square root of 68976402 is about 8305.2033087697. The cubic root of 68976402 is about 410.1098297872.

It can be divided in two parts, 68976 and 402, that added together give a triangular number (69378 = T372).

The spelling of 68976402 in words is "sixty-eight million, nine hundred seventy-six thousand, four hundred two".

Divisors: 1 2 3 6 11 22 23 33 46 66 69 138 253 506 759 1518 45439 90878 136317 272634 499829 999658 1045097 1499487 2090194 2998974 3135291 6270582 11496067 22992134 34488201 68976402