216515010 has 16 divisors (see below), whose sum is σ = 519636096. Its totient is φ = 57737328.

The previous prime is 216515003. The next prime is 216515023. The reversal of 216515010 is 10515612.

216515010 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 7 ways as a sum of consecutive naturals, for example, 3608554 + ... + 3608613.

It is an arithmetic number, because the mean of its divisors is an integer number (32477256).

Almost surely, 2^216515010 is an apocalyptic number.

216515010 is an abundant number, since it is smaller than the sum of its proper divisors (303121086).

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

216515010 is a wasteful number, since it uses less digits than its factorization.

216515010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7217177.

The product of its (nonzero) digits is 300, while the sum is 21.

The square root of 216515010 is about 14714.4490212852. The cubic root of 216515010 is about 600.4764826181.

The spelling of 216515010 in words is "two hundred sixteen million, five hundred fifteen thousand, ten".