215042804 has 6 divisors (see below), whose sum is σ = 376324914. Its totient is φ = 107521400.

The previous prime is 215042777. The next prime is 215042831. The reversal of 215042804 is 408240512.

It is a happy number.

215042804 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (215042777) and next prime (215042831).

It can be written as a sum of positive squares in only one way, i.e., 117072400 + 97970404 = 10820^2 + 9898^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26880347 + ... + 26880354.

It is an arithmetic number, because the mean of its divisors is an integer number (62720819).

Almost surely, 2^215042804 is an apocalyptic number.

It is an amenable number.

215042804 is a deficient number, since it is larger than the sum of its proper divisors (161282110).

215042804 is a wasteful number, since it uses less digits than its factorization.

215042804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53760705 (or 53760703 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 26.

The square root of 215042804 is about 14664.3378302602. The cubic root of 215042804 is about 599.1123949838.

The spelling of 215042804 in words is "two hundred fifteen million, forty-two thousand, eight hundred four".