215324930 has 16 divisors (see below), whose sum is σ = 391424184. Its totient is φ = 85276800.

The previous prime is 215324911. The next prime is 215324953. The reversal of 215324930 is 39423512.

It can be written as a sum of positive squares in 4 ways, for example, as 211208089 + 4116841 = 14533^2 + 2029^2 .

It is a junction number, because it is equal to n+sod(n) for n = 215324893 and 215324902.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 105587 + ... + 107606.

Almost surely, 2^215324930 is an apocalyptic number.

215324930 is a deficient number, since it is larger than the sum of its proper divisors (176099254).

215324930 is a wasteful number, since it uses less digits than its factorization.

215324930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213301.

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 215324930 is about 14673.9541364964. The cubic root of 215324930 is about 599.3742828755.

It can be divided in two parts, 21532 and 4930, that added together give a palindrome (26462).

The spelling of 215324930 in words is "two hundred fifteen million, three hundred twenty-four thousand, nine hundred thirty".