215390352 has 20 divisors (see below), whose sum is σ = 556425200. Its totient is φ = 71796768.

The previous prime is 215390347. The next prime is 215390353. The reversal of 215390352 is 253093512.

It is not an unprimeable number, because it can be changed into a prime (215390353) 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, 2243602 + ... + 2243697.

It is an arithmetic number, because the mean of its divisors is an integer number (27821260).

Almost surely, 2^215390352 is an apocalyptic number.

It is an amenable number.

215390352 is an abundant number, since it is smaller than the sum of its proper divisors (341034848).

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

215390352 is a wasteful number, since it uses less digits than its factorization.

215390352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4487310 (or 4487304 counting only the distinct ones).

The product of its (nonzero) digits is 8100, while the sum is 30.

The square root of 215390352 is about 14676.1831550305. The cubic root of 215390352 is about 599.4349791973.

The spelling of 215390352 in words is "two hundred fifteen million, three hundred ninety thousand, three hundred fifty-two".