118398420 has 72 divisors (see below), whose sum is σ = 410452224. Its totient is φ = 27062208.

The previous prime is 118398419. The next prime is 118398431. The reversal of 118398420 is 24893811.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 45724 + ... + 48243.

Almost surely, 2^118398420 is an apocalyptic number.

118398420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

118398420 is an abundant number, since it is smaller than the sum of its proper divisors (292053804).

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

118398420 is a wasteful number, since it uses less digits than its factorization.

118398420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93989 (or 93984 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

The square root of 118398420 is about 10881.1038043022. The cubic root of 118398420 is about 491.0382262221.

The spelling of 118398420 in words is "one hundred eighteen million, three hundred ninety-eight thousand, four hundred twenty".