117017840 has 20 divisors (see below), whose sum is σ = 272066664. Its totient is φ = 46807104.

The previous prime is 117017837. The next prime is 117017891. The reversal of 117017840 is 48710711.

It is a tau number, because it is divible by the number of its divisors (20).

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, 731282 + ... + 731441.

Almost surely, 2^117017840 is an apocalyptic number.

117017840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

117017840 is an abundant number, since it is smaller than the sum of its proper divisors (155048824).

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

117017840 is a wasteful number, since it uses less digits than its factorization.

117017840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1462736 (or 1462730 counting only the distinct ones).

The product of its (nonzero) digits is 1568, while the sum is 29.

The square root of 117017840 is about 10817.4784492505. The cubic root of 117017840 is about 489.1221823512.

The spelling of 117017840 in words is "one hundred seventeen million, seventeen thousand, eight hundred forty".