320215252 has 12 divisors (see below), whose sum is σ = 640430560. Its totient is φ = 137235096.

The previous prime is 320215249. The next prime is 320215253. The reversal of 320215252 is 252512023.

320215252 is an admirable number.

It is a super-2 number, since 2×320215252² = 205075615226847008, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320215253) 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, 5718102 + ... + 5718157.

Almost surely, 2^320215252 is an apocalyptic number.

It is an amenable number.

320215252 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

320215252 is a wasteful number, since it uses less digits than its factorization.

320215252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11436270 (or 11436268 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 320215252 is about 17894.5592848776. The cubic root of 320215252 is about 684.1437091886.

Adding to 320215252 its reverse (252512023), we get a palindrome (572727275).

It can be divided in two parts, 32021 and 5252, that added together give a palindrome (37273).

The spelling of 320215252 in words is "three hundred twenty million, two hundred fifteen thousand, two hundred fifty-two".