216157296 has 40 divisors (see below), whose sum is σ = 576423424. Its totient is φ = 69727680.

The previous prime is 216157273. The next prime is 216157391. The reversal of 216157296 is 692751612.

It is a super-2 number, since 2×216157296² = 93447953228063232, which contains 22 as substring.

It is a congruent number.

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, 71146 + ... + 74121.

Almost surely, 2^216157296 is an apocalyptic number.

It is an amenable number.

216157296 is an abundant number, since it is smaller than the sum of its proper divisors (360266128).

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

216157296 is a wasteful number, since it uses less digits than its factorization.

216157296 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145309 (or 145303 counting only the distinct ones).

The product of its digits is 45360, while the sum is 39.

The square root of 216157296 is about 14702.2888014078. The cubic root of 216157296 is about 600.1456091049.

The spelling of 216157296 in words is "two hundred sixteen million, one hundred fifty-seven thousand, two hundred ninety-six".