117737892 has 18 divisors (see below), whose sum is σ = 297615318. Its totient is φ = 39245952.

The previous prime is 117737891. The next prime is 117737923. The reversal of 117737892 is 298737711.

It can be written as a sum of positive squares in only one way, i.e., 116769636 + 968256 = 10806^2 + 984^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×117737892² = 27724422425207328, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (117737891) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1635213 + ... + 1635284.

Almost surely, 2^117737892 is an apocalyptic number.

117737892 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

117737892 is an abundant number, since it is smaller than the sum of its proper divisors (179877426).

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

117737892 is a wasteful number, since it uses less digits than its factorization.

117737892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3270507 (or 3270502 counting only the distinct ones).

The product of its digits is 148176, while the sum is 45.

The square root of 117737892 is about 10850.7092855721. The cubic root of 117737892 is about 490.1233786219.

The spelling of 117737892 in words is "one hundred seventeen million, seven hundred thirty-seven thousand, eight hundred ninety-two".