215024442 has 16 divisors (see below), whose sum is σ = 430396032. Its totient is φ = 71616960.

The previous prime is 215024419. The next prime is 215024443. The reversal of 215024442 is 244420512.

It is a happy number.

It is a super-2 number, since 2×215024442² = 92471021314822728, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (215024443) 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, 6034 + ... + 21597.

It is an arithmetic number, because the mean of its divisors is an integer number (26899752).

Almost surely, 2^215024442 is an apocalyptic number.

215024442 is an abundant number, since it is smaller than the sum of its proper divisors (215371590).

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

215024442 is a wasteful number, since it uses less digits than its factorization.

215024442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28933.

The product of its (nonzero) digits is 2560, while the sum is 24.

The square root of 215024442 is about 14663.7117402109. The cubic root of 215024442 is about 599.0953422316.

Adding to 215024442 its reverse (244420512), we get a palindrome (459444954).

The spelling of 215024442 in words is "two hundred fifteen million, twenty-four thousand, four hundred forty-two".