15982216 has 16 divisors (see below), whose sum is σ = 30121740. Its totient is φ = 7949760.

The previous prime is 15982199. The next prime is 15982229. The reversal of 15982216 is 61228951.

It can be written as a sum of positive squares in 2 ways, for example, as 15634116 + 348100 = 3954^2 + 590^2 .

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, 3495 + ... + 6646.

Almost surely, 2^15982216 is an apocalyptic number.

It is an amenable number.

15982216 is a deficient number, since it is larger than the sum of its proper divisors (14139524).

15982216 is a wasteful number, since it uses less digits than its factorization.

15982216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10344 (or 10340 counting only the distinct ones).

The product of its digits is 8640, while the sum is 34.

The square root of 15982216 is about 3997.7763819403. The cubic root of 15982216 is about 251.8908152179.

The spelling of 15982216 in words is "fifteen million, nine hundred eighty-two thousand, two hundred sixteen".