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68406292 = 22431372903
BaseRepresentation
bin1000001001111…
…00110000010100
311202201101210101
410010330300110
5120003000132
610442103444
71460305153
oct404746024
9152641711
1068406292
1135682729
121aaaab84
13112312c6
14912959a
1560137e7
hex413cc14

68406292 has 24 divisors (see below), whose sum is σ = 123431616. Its totient is φ = 33152448.

The previous prime is 68406287. The next prime is 68406319. The reversal of 68406292 is 29260486.

It is a congruent number.

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, 22113 + ... + 25015.

It is an arithmetic number, because the mean of its divisors is an integer number (5142984).

Almost surely, 268406292 is an apocalyptic number.

It is an amenable number.

68406292 is a deficient number, since it is larger than the sum of its proper divisors (55025324).

68406292 is a wasteful number, since it uses less digits than its factorization.

68406292 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3087 (or 3085 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 37.

The square root of 68406292 is about 8270.8096338871. The cubic root of 68406292 is about 408.9768101581.

The spelling of 68406292 in words is "sixty-eight million, four hundred six thousand, two hundred ninety-two".

Divisors: 1 2 4 43 86 137 172 274 548 2903 5806 5891 11612 11782 23564 124829 249658 397711 499316 795422 1590844 17101573 34203146 68406292