220615916 has 48 divisors (see below), whose sum is σ = 421031520. Its totient is φ = 100800000.

The previous prime is 220615873. The next prime is 220615943. The reversal of 220615916 is 619516022.

It is a happy number.

220615916 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 314366 + ... + 315066.

It is an arithmetic number, because the mean of its divisors is an integer number (8771490).

Almost surely, 2^220615916 is an apocalyptic number.

It is an amenable number.

220615916 is a deficient number, since it is larger than the sum of its proper divisors (200415604).

220615916 is a wasteful number, since it uses less digits than its factorization.

220615916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 866 (or 864 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 220615916 is about 14853.1449868370. The cubic root of 220615916 is about 604.2439076027.

The spelling of 220615916 in words is "two hundred twenty million, six hundred fifteen thousand, nine hundred sixteen".