215306974272 has 112 divisors (see below), whose sum is σ = 613684636992. Its totient is φ = 66226944000.

The previous prime is 215306974249. The next prime is 215306974301. The reversal of 215306974272 is 272479603512.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8866147 + ... + 8890397.

It is an arithmetic number, because the mean of its divisors is an integer number (5479327116).

Almost surely, 2^215306974272 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 215306974272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (306842318496).

215306974272 is an abundant number, since it is smaller than the sum of its proper divisors (398377662720).

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

215306974272 is a wasteful number, since it uses less digits than its factorization.

215306974272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27836 (or 27826 counting only the distinct ones).

The product of its (nonzero) digits is 1270080, while the sum is 48.

The spelling of 215306974272 in words is "two hundred fifteen billion, three hundred six million, nine hundred seventy-four thousand, two hundred seventy-two".