216288572 has 12 divisors (see below), whose sum is σ = 384920760. Its totient is φ = 106311216.

The previous prime is 216288559. The next prime is 216288593. The reversal of 216288572 is 275882612.

216288572 is digitally balanced in base 2, 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 polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 458003 + ... + 458474.

It is an arithmetic number, because the mean of its divisors is an integer number (32076730).

Almost surely, 2^216288572 is an apocalyptic number.

It is an amenable number.

216288572 is a deficient number, since it is larger than the sum of its proper divisors (168632188).

216288572 is a wasteful number, since it uses less digits than its factorization.

216288572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 916540 (or 916538 counting only the distinct ones).

The product of its digits is 107520, while the sum is 41.

The square root of 216288572 is about 14706.7525987214. The cubic root of 216288572 is about 600.2670773948.

The spelling of 216288572 in words is "two hundred sixteen million, two hundred eighty-eight thousand, five hundred seventy-two".