117138726 has 12 divisors (see below), whose sum is σ = 253800612. Its totient is φ = 39046236.

The previous prime is 117138719. The next prime is 117138737. The reversal of 117138726 is 627831711.

It is a super-2 number, since 2×117138726² = 27442962257806152, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3253836 + ... + 3253871.

It is an arithmetic number, because the mean of its divisors is an integer number (21150051).

Almost surely, 2^117138726 is an apocalyptic number.

117138726 is an abundant number, since it is smaller than the sum of its proper divisors (136661886).

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

117138726 is a wasteful number, since it uses less digits than its factorization.

117138726 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6507715 (or 6507712 counting only the distinct ones).

The product of its digits is 14112, while the sum is 36.

The square root of 117138726 is about 10823.0645382904. The cubic root of 117138726 is about 489.2905546124.

The spelling of 117138726 in words is "one hundred seventeen million, one hundred thirty-eight thousand, seven hundred twenty-six".