216515032 has 16 divisors (see below), whose sum is σ = 427332600. Its totient is φ = 102559680.

The previous prime is 216515027. The next prime is 216515053. The reversal of 216515032 is 230515612.

It is a super-2 number, since 2×216515032² = 93757518163922048, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 216514988 and 216515006.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 712069 + ... + 712372.

Almost surely, 2^216515032 is an apocalyptic number.

It is an amenable number.

216515032 is a deficient number, since it is larger than the sum of its proper divisors (210817568).

216515032 is a wasteful number, since it uses less digits than its factorization.

216515032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1424466 (or 1424462 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 216515032 is about 14714.4497688497. The cubic root of 216515032 is about 600.4765029562.

The spelling of 216515032 in words is "two hundred sixteen million, five hundred fifteen thousand, thirty-two".