215112150 has 72 divisors (see below), whose sum is σ = 630488664. Its totient is φ = 52147200.

The previous prime is 215112133. The next prime is 215112173. The reversal of 215112150 is 51211512.

215112150 is a `hidden beast` number, since 2 + 1 + 511 + 2 + 150 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 16779 + ... + 26678.

It is an arithmetic number, because the mean of its divisors is an integer number (8756787).

Almost surely, 2^215112150 is an apocalyptic number.

215112150 is an abundant number, since it is smaller than the sum of its proper divisors (415376514).

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

215112150 is a wasteful number, since it uses less digits than its factorization.

215112150 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43486 (or 43478 counting only the distinct ones).

The product of its (nonzero) digits is 100, while the sum is 18.

The square root of 215112150 is about 14666.7020832906. The cubic root of 215112150 is about 599.1767877191.

Adding to 215112150 its reverse (51211512), we get a palindrome (266323662).

The spelling of 215112150 in words is "two hundred fifteen million, one hundred twelve thousand, one hundred fifty".