118810920 has 64 divisors (see below), whose sum is σ = 362298240. Its totient is φ = 31161600.

The previous prime is 118810919. The next prime is 118810927. The reversal of 118810920 is 29018811.

It is a super-2 number, since 2×118810920² = 28232069422492800, which contains 22 as substring.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (118810927) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 796 + ... + 15435.

It is an arithmetic number, because the mean of its divisors is an integer number (5660910).

Almost surely, 2^118810920 is an apocalyptic number.

118810920 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 118810920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (181149120).

118810920 is an abundant number, since it is smaller than the sum of its proper divisors (243487320).

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

118810920 is a wasteful number, since it uses less digits than its factorization.

118810920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16306 (or 16302 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 30.

The square root of 118810920 is about 10900.0422017532. The cubic root of 118810920 is about 491.6078241687.

The spelling of 118810920 in words is "one hundred eighteen million, eight hundred ten thousand, nine hundred twenty".