215208872 has 32 divisors (see below), whose sum is σ = 421480800. Its totient is φ = 102913344.

The previous prime is 215208871. The next prime is 215208943. The reversal of 215208872 is 278802512.

It is not an unprimeable number, because it can be changed into a prime (215208871) 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, 11303 + ... + 23625.

It is an arithmetic number, because the mean of its divisors is an integer number (13171275).

Almost surely, 2^215208872 is an apocalyptic number.

It is an amenable number.

215208872 is a deficient number, since it is larger than the sum of its proper divisors (206271928).

215208872 is a wasteful number, since it uses less digits than its factorization.

215208872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12425 (or 12421 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 35.

The square root of 215208872 is about 14669.9990456714. Note that the first 3 decimals coincide. The cubic root of 215208872 is about 599.2665779261.

The spelling of 215208872 in words is "two hundred fifteen million, two hundred eight thousand, eight hundred seventy-two".