215302912 has 72 divisors (see below), whose sum is σ = 474101712. Its totient is φ = 96768000.

The previous prime is 215302891. The next prime is 215302921. The reversal of 215302912 is 219203512.

It is a happy number.

It is a hoax number, since the sum of its digits (25) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 284038 + ... + 284794.

It is an arithmetic number, because the mean of its divisors is an integer number (6584746).

Almost surely, 2^215302912 is an apocalyptic number.

215302912 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 215302912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (237050856).

215302912 is an abundant number, since it is smaller than the sum of its proper divisors (258798800).

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

215302912 is a wasteful number, since it uses less digits than its factorization.

215302912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 885 (or 871 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 215302912 is about 14673.2038764545. The cubic root of 215302912 is about 599.3538525537.

It can be divided in two parts, 21530 and 2912, that added together give a palindrome (24442).

The spelling of 215302912 in words is "two hundred fifteen million, three hundred two thousand, nine hundred twelve".