215315952 has 40 divisors (see below), whose sum is σ = 575417040. Its totient is φ = 69296640.

The previous prime is 215315951. The next prime is 215315953. The reversal of 215315952 is 259513512.

It is an interprime number because it is at equal distance from previous prime (215315951) and next prime (215315953).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215315951) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75949 + ... + 78732.

It is an arithmetic number, because the mean of its divisors is an integer number (14385426).

Almost surely, 2^215315952 is an apocalyptic number.

It is an amenable number.

215315952 is an abundant number, since it is smaller than the sum of its proper divisors (360101088).

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

215315952 is a wasteful number, since it uses less digits than its factorization.

215315952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154721 (or 154715 counting only the distinct ones).

The product of its digits is 13500, while the sum is 33.

The square root of 215315952 is about 14673.6482171272. The cubic root of 215315952 is about 599.3659524310.

The spelling of 215315952 in words is "two hundred fifteen million, three hundred fifteen thousand, nine hundred fifty-two".