220515612 has 24 divisors (see below), whose sum is σ = 517235712. Its totient is φ = 73119600.

The previous prime is 220515601. The next prime is 220515641. The reversal of 220515612 is 216515022.

It is a happy number.

220515612 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45814 + ... + 50397.

It is an arithmetic number, because the mean of its divisors is an integer number (21551488).

Almost surely, 2^220515612 is an apocalyptic number.

It is an amenable number.

220515612 is an abundant number, since it is smaller than the sum of its proper divisors (296720100).

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

220515612 is a wasteful number, since it uses less digits than its factorization.

220515612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96409 (or 96407 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 220515612 is about 14849.7680789971. The cubic root of 220515612 is about 604.1523196678.

The spelling of 220515612 in words is "two hundred twenty million, five hundred fifteen thousand, six hundred twelve".