118715820 has 24 divisors (see below), whose sum is σ = 332404464. Its totient is φ = 31657536.

The previous prime is 118715809. The next prime is 118715867. The reversal of 118715820 is 28517811.

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, 989239 + ... + 989358.

It is an arithmetic number, because the mean of its divisors is an integer number (13850186).

Almost surely, 2^118715820 is an apocalyptic number.

118715820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

118715820 is an abundant number, since it is smaller than the sum of its proper divisors (213688644).

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

118715820 is a wasteful number, since it uses less digits than its factorization.

118715820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1978609 (or 1978607 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 33.

The square root of 118715820 is about 10895.6789600281. The cubic root of 118715820 is about 491.4766230313.

The spelling of 118715820 in words is "one hundred eighteen million, seven hundred fifteen thousand, eight hundred twenty".