118312520 has 64 divisors (see below), whose sum is σ = 283376880. Its totient is φ = 44302336.

The previous prime is 118312501. The next prime is 118312541. The reversal of 118312520 is 25213811.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 118243876 + 68644 = 10874^2 + 262^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 174422 + ... + 175098.

Almost surely, 2^118312520 is an apocalyptic number.

118312520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 118312520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (141688440).

118312520 is an abundant number, since it is smaller than the sum of its proper divisors (165064360).

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

118312520 is a wasteful number, since it uses less digits than its factorization.

118312520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 962 (or 958 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 23.

The square root of 118312520 is about 10877.1558782616. The cubic root of 118312520 is about 490.9194453899.

The spelling of 118312520 in words is "one hundred eighteen million, three hundred twelve thousand, five hundred twenty".