215321150 has 48 divisors (see below), whose sum is σ = 462626640. Its totient is φ = 73689600.

The previous prime is 215321123. The next prime is 215321179. The reversal of 215321150 is 51123512.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2165 + ... + 20864.

It is an arithmetic number, because the mean of its divisors is an integer number (9638055).

Almost surely, 2^215321150 is an apocalyptic number.

215321150 is an abundant number, since it is smaller than the sum of its proper divisors (247305490).

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

215321150 is a wasteful number, since it uses less digits than its factorization.

215321150 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23069 (or 23064 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 20.

The square root of 215321150 is about 14673.8253362918. The cubic root of 215321150 is about 599.3707755435.

Adding to 215321150 its reverse (51123512), we get a palindrome (266444662).

The spelling of 215321150 in words is "two hundred fifteen million, three hundred twenty-one thousand, one hundred fifty".