216040624 has 40 divisors (see below), whose sum is σ = 444212640. Its totient is φ = 101434368.

The previous prime is 216040619. The next prime is 216040639. The reversal of 216040624 is 426040612.

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, 201562 + ... + 202630.

It is an arithmetic number, because the mean of its divisors is an integer number (11105316).

Almost surely, 2^216040624 is an apocalyptic number.

It is an amenable number.

216040624 is an abundant number, since it is smaller than the sum of its proper divisors (228172016).

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

216040624 is a wasteful number, since it uses less digits than its factorization.

216040624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1837 (or 1831 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 216040624 is about 14698.3204482689. The cubic root of 216040624 is about 600.0376124569.

The spelling of 216040624 in words is "two hundred sixteen million, forty thousand, six hundred twenty-four".