215338956 has 48 divisors (see below), whose sum is σ = 576016896. Its totient is φ = 61334784.

The previous prime is 215338943. The next prime is 215338961. The reversal of 215338956 is 659833512.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 24505 + ... + 32111.

It is an arithmetic number, because the mean of its divisors is an integer number (12000352).

Almost surely, 2^215338956 is an apocalyptic number.

It is an amenable number.

215338956 is an abundant number, since it is smaller than the sum of its proper divisors (360677940).

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

215338956 is a wasteful number, since it uses less digits than its factorization.

215338956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7958 (or 7956 counting only the distinct ones).

The product of its digits is 194400, while the sum is 42.

The square root of 215338956 is about 14674.4320503384. The cubic root of 215338956 is about 599.3872967598.

The spelling of 215338956 in words is "two hundred fifteen million, three hundred thirty-eight thousand, nine hundred fifty-six".