216271296 has 70 divisors (see below), whose sum is σ = 641111240. Its totient is φ = 72088704.

The previous prime is 216271259. The next prime is 216271303. The reversal of 216271296 is 692172612.

216271296 is a `hidden beast` number, since 2 + 1 + 627 + 1 + 29 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 216271296.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 15676 + ... + 26043.

It is an arithmetic number, because the mean of its divisors is an integer number (9158732).

Almost surely, 2^216271296 is an apocalyptic number.

It is an amenable number.

216271296 is an abundant number, since it is smaller than the sum of its proper divisors (424839944).

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

216271296 is an equidigital number, since it uses as much as digits as its factorization.

216271296 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41743 (or 41724 counting only the distinct ones).

The product of its digits is 18144, while the sum is 36.

The square root of 216271296 is about 14706.1652377498. The cubic root of 216271296 is about 600.2510949043.

The spelling of 216271296 in words is "two hundred sixteen million, two hundred seventy-one thousand, two hundred ninety-six".