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68731194 = 2371636457
BaseRepresentation
bin1000001100011…
…00000100111010
311210022220110210
410012030010322
5120043344234
610453051550
71463130330
oct406140472
9153286423
1068731194
1135884844
121b026bb6
131131615c
1491b1b50
156079be9
hex418c13a

68731194 has 16 divisors (see below), whose sum is σ = 157099968. Its totient is φ = 19637472.

The previous prime is 68731181. The next prime is 68731219. The reversal of 68731194 is 49113786.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 818187 + ... + 818270.

It is an arithmetic number, because the mean of its divisors is an integer number (9818748).

Almost surely, 268731194 is an apocalyptic number.

68731194 is an abundant number, since it is smaller than the sum of its proper divisors (88368774).

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

68731194 is a wasteful number, since it uses less digits than its factorization.

68731194 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1636469.

The product of its digits is 36288, while the sum is 39.

The square root of 68731194 is about 8290.4278538565. The cubic root of 68731194 is about 409.6232787889.

The spelling of 68731194 in words is "sixty-eight million, seven hundred thirty-one thousand, one hundred ninety-four".

Divisors: 1 2 3 6 7 14 21 42 1636457 3272914 4909371 9818742 11455199 22910398 34365597 68731194