215413136 has 10 divisors (see below), whose sum is σ = 417362982. Its totient is φ = 107706560.

The previous prime is 215413129. The next prime is 215413157. The reversal of 215413136 is 631314512.

215413136 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., 157653136 + 57760000 = 12556^2 + 7600^2 .

It is a super-2 number, since 2×215413136² = 92805638322708992, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6731645 + ... + 6731676.

Almost surely, 2^215413136 is an apocalyptic number.

It is an amenable number.

215413136 is a deficient number, since it is larger than the sum of its proper divisors (201949846).

215413136 is a wasteful number, since it uses less digits than its factorization.

215413136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13463329 (or 13463323 counting only the distinct ones).

The product of its digits is 2160, while the sum is 26.

The square root of 215413136 is about 14676.9593581232. The cubic root of 215413136 is about 599.4561145374.

Adding to 215413136 its reverse (631314512), we get a palindrome (846727648).

The spelling of 215413136 in words is "two hundred fifteen million, four hundred thirteen thousand, one hundred thirty-six".