118507640 has 32 divisors (see below), whose sum is σ = 267030000. Its totient is φ = 47334144.

The previous prime is 118507619. The next prime is 118507651. The reversal of 118507640 is 46705811.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 118507597 and 118507606.

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, 32636 + ... + 36084.

Almost surely, 2^118507640 is an apocalyptic number.

118507640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

118507640 is an abundant number, since it is smaller than the sum of its proper divisors (148522360).

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

118507640 is a wasteful number, since it uses less digits than its factorization.

118507640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4319 (or 4315 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 32.

The square root of 118507640 is about 10886.1214397048. The cubic root of 118507640 is about 491.1891705570.

The spelling of 118507640 in words is "one hundred eighteen million, five hundred seven thousand, six hundred forty".