118513840 has 40 divisors (see below), whose sum is σ = 276031440. Its totient is φ = 47321856.

The previous prime is 118513799. The next prime is 118513841. The reversal of 118513840 is 48315811.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (118513841) 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, 65427 + ... + 67213.

It is an arithmetic number, because the mean of its divisors is an integer number (6900786).

Almost surely, 2^118513840 is an apocalyptic number.

118513840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

118513840 is an abundant number, since it is smaller than the sum of its proper divisors (157517600).

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

118513840 is a wasteful number, since it uses less digits than its factorization.

118513840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2629 (or 2623 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 31.

The square root of 118513840 is about 10886.4062022322. The cubic root of 118513840 is about 491.1977363051.

The spelling of 118513840 in words is "one hundred eighteen million, five hundred thirteen thousand, eight hundred forty".