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68779396 = 2272456407
BaseRepresentation
bin1000001100101…
…11110110000100
311210102100121001
410012113312010
5120101420041
610454103044
71463421010
oct406276604
9153370531
1068779396
1135907a84
121b04aa84
131133208a
1491c5540
156089131
hex4197d84

68779396 has 12 divisors (see below), whose sum is σ = 137558848. Its totient is φ = 29476872.

The previous prime is 68779393. The next prime is 68779397. The reversal of 68779396 is 69397786.

68779396 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (68779393) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1228176 + ... + 1228231.

Almost surely, 268779396 is an apocalyptic number.

It is an amenable number.

68779396 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

68779396 is a wasteful number, since it uses less digits than its factorization.

68779396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2456418 (or 2456416 counting only the distinct ones).

The product of its digits is 3429216, while the sum is 55.

The square root of 68779396 is about 8293.3344319399. The cubic root of 68779396 is about 409.7190142971.

The spelling of 68779396 in words is "sixty-eight million, seven hundred seventy-nine thousand, three hundred ninety-six".

Divisors: 1 2 4 7 14 28 2456407 4912814 9825628 17194849 34389698 68779396