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68880704 = 268312967
BaseRepresentation
bin1000001101100…
…00100101000000
311210121111120012
410012300211000
5120113140304
610500204052
71464322244
oct406604500
9153544505
1068880704
1135977102
121b099628
1311369219
149210424
1560a916e
hex41b0940

68880704 has 28 divisors (see below), whose sum is σ = 138342624. Its totient is φ = 34022784.

The previous prime is 68880689. The next prime is 68880727. The reversal of 68880704 is 40708886.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1172 + ... + 11795.

It is an arithmetic number, because the mean of its divisors is an integer number (4940808).

Almost surely, 268880704 is an apocalyptic number.

68880704 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

68880704 is an abundant number, since it is smaller than the sum of its proper divisors (69461920).

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

68880704 is a wasteful number, since it uses less digits than its factorization.

68880704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13062 (or 13052 counting only the distinct ones).

The product of its (nonzero) digits is 86016, while the sum is 41.

The square root of 68880704 is about 8299.4399811072. The cubic root of 68880704 is about 409.9200796037.

The spelling of 68880704 in words is "sixty-eight million, eight hundred eighty thousand, seven hundred four".

Divisors: 1 2 4 8 16 32 64 83 166 332 664 1328 2656 5312 12967 25934 51868 103736 207472 414944 829888 1076261 2152522 4305044 8610088 17220176 34440352 68880704