215389796 has 12 divisors (see below), whose sum is σ = 399104748. Its totient is φ = 101359872.

The previous prime is 215389763. The next prime is 215389817. The reversal of 215389796 is 697983512.

215389796 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 110040100 + 105349696 = 10490^2 + 10264^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1583681 + ... + 1583816.

It is an arithmetic number, because the mean of its divisors is an integer number (33258729).

Almost surely, 2^215389796 is an apocalyptic number.

It is an amenable number.

215389796 is a deficient number, since it is larger than the sum of its proper divisors (183714952).

215389796 is a wasteful number, since it uses less digits than its factorization.

215389796 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3167518 (or 3167516 counting only the distinct ones).

The product of its digits is 816480, while the sum is 50.

The square root of 215389796 is about 14676.1642127635. The cubic root of 215389796 is about 599.4344634111.

The spelling of 215389796 in words is "two hundred fifteen million, three hundred eighty-nine thousand, seven hundred ninety-six".