118664520 has 256 divisors, whose sum is σ = 412473600. Its totient is φ = 27095040.

The previous prime is 118664503. The next prime is 118664531. The reversal of 118664520 is 25466811.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1945290 + ... + 1945350.

It is an arithmetic number, because the mean of its divisors is an integer number (1611225).

Almost surely, 2^118664520 is an apocalyptic number.

118664520 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 118664520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (206236800).

118664520 is an abundant number, since it is smaller than the sum of its proper divisors (293809080).

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

118664520 is a wasteful number, since it uses less digits than its factorization.

118664520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160 (or 156 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 118664520 is about 10893.3245614000. The cubic root of 118664520 is about 491.4058198215.

The spelling of 118664520 in words is "one hundred eighteen million, six hundred sixty-four thousand, five hundred twenty".