215023364 has 6 divisors (see below), whose sum is σ = 376290894. Its totient is φ = 107511680.

The previous prime is 215023357. The next prime is 215023373. The reversal of 215023364 is 463320512.

215023364 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 only one way, i.e., 185776900 + 29246464 = 13630^2 + 5408^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26877917 + ... + 26877924.

It is an arithmetic number, because the mean of its divisors is an integer number (62715149).

Almost surely, 2^215023364 is an apocalyptic number.

It is an amenable number.

215023364 is a deficient number, since it is larger than the sum of its proper divisors (161267530).

215023364 is a wasteful number, since it uses less digits than its factorization.

215023364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53755845 (or 53755843 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 26.

The square root of 215023364 is about 14663.6749827593. The cubic root of 215023364 is about 599.0943410650.

Adding to 215023364 its reverse (463320512), we get a palindrome (678343876).

The spelling of 215023364 in words is "two hundred fifteen million, twenty-three thousand, three hundred sixty-four".