215412604 has 12 divisors (see below), whose sum is σ = 411242328. Its totient is φ = 97914800.

The previous prime is 215412581. The next prime is 215412731. The reversal of 215412604 is 406214512.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2447827 + ... + 2447914.

It is an arithmetic number, because the mean of its divisors is an integer number (34270194).

Almost surely, 2^215412604 is an apocalyptic number.

It is an amenable number.

215412604 is a deficient number, since it is larger than the sum of its proper divisors (195829724).

215412604 is a wasteful number, since it uses less digits than its factorization.

215412604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4895756 (or 4895754 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 215412604 is about 14676.9412344671. The cubic root of 215412604 is about 599.4556210501.

The spelling of 215412604 in words is "two hundred fifteen million, four hundred twelve thousand, six hundred four".