118399840 has 48 divisors (see below), whose sum is σ = 301241808. Its totient is φ = 43716096.

The previous prime is 118399829. The next prime is 118399847. The reversal of 118399840 is 48993811.

It is a super-2 number, since 2×118399840² = 28037044224051200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118399847) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26382 + ... + 30541.

It is an arithmetic number, because the mean of its divisors is an integer number (6275871).

Almost surely, 2^118399840 is an apocalyptic number.

118399840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

118399840 is an abundant number, since it is smaller than the sum of its proper divisors (182841968).

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

118399840 is a wasteful number, since it uses less digits than its factorization.

118399840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56951 (or 56943 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 43.

The square root of 118399840 is about 10881.1690548396. The cubic root of 118399840 is about 491.0401892874.

The spelling of 118399840 in words is "one hundred eighteen million, three hundred ninety-nine thousand, eight hundred forty".