216572288 has 32 divisors (see below), whose sum is σ = 435925560. Its totient is φ = 107163648.

The previous prime is 216572281. The next prime is 216572327. The reversal of 216572288 is 882275612.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216572281) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3695 + ... + 21137.

Almost surely, 2^216572288 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 216572288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (217962780).

216572288 is an abundant number, since it is smaller than the sum of its proper divisors (219353272).

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

216572288 is an equidigital number, since it uses as much as digits as its factorization.

216572288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17554 (or 17542 counting only the distinct ones).

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

The square root of 216572288 is about 14716.3952107845. The cubic root of 216572288 is about 600.5294290004.

The spelling of 216572288 in words is "two hundred sixteen million, five hundred seventy-two thousand, two hundred eighty-eight".