215808796 has 24 divisors (see below), whose sum is σ = 433351296. Its totient is φ = 92118000.

The previous prime is 215808781. The next prime is 215808797. The reversal of 215808796 is 697808512.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215808797) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8326 + ... + 22381.

It is an arithmetic number, because the mean of its divisors is an integer number (18056304).

Almost surely, 2^215808796 is an apocalyptic number.

It is an amenable number.

215808796 is an abundant number, since it is smaller than the sum of its proper divisors (217542500).

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

215808796 is a wasteful number, since it uses less digits than its factorization.

215808796 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30969 (or 30967 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 46.

The square root of 215808796 is about 14690.4321243454. The cubic root of 215808796 is about 599.8229069945.

The spelling of 215808796 in words is "two hundred fifteen million, eight hundred eight thousand, seven hundred ninety-six".