215324530 has 16 divisors (see below), whose sum is σ = 407983680. Its totient is φ = 81596592.

The previous prime is 215324513. The next prime is 215324537. The reversal of 215324530 is 35423512.

It is a junction number, because it is equal to n+sod(n) for n = 215324495 and 215324504.

It is not an unprimeable number, because it can be changed into a prime (215324537) 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, 566454 + ... + 566833.

It is an arithmetic number, because the mean of its divisors is an integer number (25498980).

Almost surely, 2^215324530 is an apocalyptic number.

215324530 is a deficient number, since it is larger than the sum of its proper divisors (192659150).

215324530 is a wasteful number, since it uses less digits than its factorization.

215324530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1133313.

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 215324530 is about 14673.9405068986. The cubic root of 215324530 is about 599.3739117312.

It can be divided in two parts, 21532 and 4530, that added together give a palindrome (26062).

The spelling of 215324530 in words is "two hundred fifteen million, three hundred twenty-four thousand, five hundred thirty".