216260412 has 24 divisors (see below), whose sum is σ = 518246736. Its totient is φ = 70138368.

The previous prime is 216260353. The next prime is 216260479. The reversal of 216260412 is 214062612.

It is a congruent number.

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, 243093 + ... + 243980.

It is an arithmetic number, because the mean of its divisors is an integer number (21593614).

Almost surely, 2^216260412 is an apocalyptic number.

It is an amenable number.

216260412 is an abundant number, since it is smaller than the sum of its proper divisors (301986324).

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

216260412 is a wasteful number, since it uses less digits than its factorization.

216260412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 487117 (or 487115 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 216260412 is about 14705.7951842122. The cubic root of 216260412 is about 600.2410253872.

The spelling of 216260412 in words is "two hundred sixteen million, two hundred sixty thousand, four hundred twelve".