215382442 has 64 divisors (see below), whose sum is σ = 396887040. Its totient is φ = 86486400.

The previous prime is 215382413. The next prime is 215382443. The reversal of 215382442 is 244283512.

It is not an unprimeable number, because it can be changed into a prime (215382443) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 413142 + ... + 413662.

It is an arithmetic number, because the mean of its divisors is an integer number (6201360).

Almost surely, 2^215382442 is an apocalyptic number.

215382442 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

215382442 is the 11983-rd pentagonal number.

215382442 is a deficient number, since it is larger than the sum of its proper divisors (181504598).

215382442 is a wasteful number, since it uses less digits than its factorization.

215382442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 619.

The product of its digits is 15360, while the sum is 31.

The square root of 215382442 is about 14675.9136683206. The cubic root of 215382442 is about 599.4276412197.

The spelling of 215382442 in words is "two hundred fifteen million, three hundred eighty-two thousand, four hundred forty-two".