118405880 has 32 divisors (see below), whose sum is σ = 270786240. Its totient is φ = 46584960.

The previous prime is 118405877. The next prime is 118405897. The reversal of 118405880 is 88504811.

It is a self number, because there is not a number n which added to its sum of digits gives 118405880.

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, 21824 + ... + 26703.

It is an arithmetic number, because the mean of its divisors is an integer number (8462070).

Almost surely, 2^118405880 is an apocalyptic number.

118405880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

118405880 is an abundant number, since it is smaller than the sum of its proper divisors (152380360).

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

118405880 is a wasteful number, since it uses less digits than its factorization.

118405880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48599 (or 48595 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 35.

The square root of 118405880 is about 10881.4465950075. The cubic root of 118405880 is about 491.0485390518.

The spelling of 118405880 in words is "one hundred eighteen million, four hundred five thousand, eight hundred eighty".