215056064 has 28 divisors (see below), whose sum is σ = 433129944. Its totient is φ = 105921024.

The previous prime is 215056057. The next prime is 215056147. The reversal of 215056064 is 460650512.

215056064 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×215056064² = 92498221326344192, which contains 22 as substring.

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

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, 20789 + ... + 29364.

Almost surely, 2^215056064 is an apocalyptic number.

It is an amenable number.

215056064 is an abundant number, since it is smaller than the sum of its proper divisors (218073880).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

215056064 is an equidigital number, since it uses as much as digits as its factorization.

215056064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50232 (or 50222 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 215056064 is about 14664.7899405344. The cubic root of 215056064 is about 599.1247089153.

The spelling of 215056064 in words is "two hundred fifteen million, fifty-six thousand, sixty-four".