215322752 has 24 divisors (see below), whose sum is σ = 429294285. Its totient is φ = 107578368.

The previous prime is 215322749. The next prime is 215322769. The reversal of 215322752 is 257223512.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 2 ways, for example, as 119596096 + 95726656 = 10936^2 + 9784^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=10376.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 165368 + ... + 166664.

Almost surely, 2^215322752 is an apocalyptic number.

It is an amenable number.

215322752 is a deficient number, since it is larger than the sum of its proper divisors (213971533).

215322752 is an frugal number, since it uses more digits than its factorization.

215322752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2608 (or 1299 counting only the distinct ones).

The product of its digits is 8400, while the sum is 29.

The square root of 215322752 is about 14673.8799231832. The cubic root of 215322752 is about 599.3722619892.

The spelling of 215322752 in words is "two hundred fifteen million, three hundred twenty-two thousand, seven hundred fifty-two".