118920820 has 12 divisors (see below), whose sum is σ = 249733764. Its totient is φ = 47568320.

The previous prime is 118920803. The next prime is 118920847. The reversal of 118920820 is 28029811.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 37307664 + 81613156 = 6108^2 + 9034^2 .

It is a super-2 number, since 2×118920820² = 28284322858944800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2973001 + ... + 2973040.

It is an arithmetic number, because the mean of its divisors is an integer number (20811147).

Almost surely, 2^118920820 is an apocalyptic number.

118920820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

118920820 is an abundant number, since it is smaller than the sum of its proper divisors (130812944).

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

118920820 is a wasteful number, since it uses less digits than its factorization.

118920820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5946050 (or 5946048 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 31.

The square root of 118920820 is about 10905.0823013859. The cubic root of 118920820 is about 491.7593563958.

The spelling of 118920820 in words is "one hundred eighteen million, nine hundred twenty thousand, eight hundred twenty".