215968224 has 48 divisors (see below), whose sum is σ = 568611792. Its totient is φ = 71774208.

The previous prime is 215968219. The next prime is 215968253. The reversal of 215968224 is 422869512.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30702 + ... + 37074.

It is an arithmetic number, because the mean of its divisors is an integer number (11846079).

Almost surely, 2^215968224 is an apocalyptic number.

215968224 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

215968224 is an abundant number, since it is smaller than the sum of its proper divisors (352643568).

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

215968224 is a wasteful number, since it uses less digits than its factorization.

215968224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6739 (or 6731 counting only the distinct ones).

The product of its digits is 69120, while the sum is 39.

The square root of 215968224 is about 14695.8573754647. The cubic root of 215968224 is about 599.9705763349.

The spelling of 215968224 in words is "two hundred fifteen million, nine hundred sixty-eight thousand, two hundred twenty-four".