215963328 has 56 divisors (see below), whose sum is σ = 653036032. Its totient is φ = 61703424.

The previous prime is 215963323. The next prime is 215963387. The reversal of 215963328 is 823369512.

It is a tau number, because it is divible by the number of its divisors (56).

It is not an unprimeable number, because it can be changed into a prime (215963323) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79000 + ... + 81687.

Almost surely, 2^215963328 is an apocalyptic number.

215963328 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

215963328 is an abundant number, since it is smaller than the sum of its proper divisors (437072704).

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

215963328 is a wasteful number, since it uses less digits than its factorization.

215963328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160709 (or 160699 counting only the distinct ones).

The product of its digits is 77760, while the sum is 39.

The square root of 215963328 is about 14695.6907969649. The cubic root of 215963328 is about 599.9660425226.

The spelling of 215963328 in words is "two hundred fifteen million, nine hundred sixty-three thousand, three hundred twenty-eight".