215207652 has 24 divisors (see below), whose sum is σ = 547801632. Its totient is φ = 65214400.

The previous prime is 215207639. The next prime is 215207659. The reversal of 215207652 is 256702512.

It is not an unprimeable number, because it can be changed into a prime (215207659) 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, 815049 + ... + 815312.

It is an arithmetic number, because the mean of its divisors is an integer number (22825068).

Almost surely, 2^215207652 is an apocalyptic number.

215207652 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

215207652 is an abundant number, since it is smaller than the sum of its proper divisors (332593980).

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

215207652 is a wasteful number, since it uses less digits than its factorization.

215207652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1630379 (or 1630377 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 30.

The square root of 215207652 is about 14669.9574641510. The cubic root of 215207652 is about 599.2654455276.

The spelling of 215207652 in words is "two hundred fifteen million, two hundred seven thousand, six hundred fifty-two".