16216986 has 16 divisors (see below), whose sum is σ = 32523264. Its totient is φ = 5390784.

The previous prime is 16216979. The next prime is 16217009. The reversal of 16216986 is 68961261.

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, 1231 + ... + 5826.

It is an arithmetic number, because the mean of its divisors is an integer number (2032704).

Almost surely, 2^16216986 is an apocalyptic number.

16216986 is an abundant number, since it is smaller than the sum of its proper divisors (16306278).

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

16216986 is a wasteful number, since it uses less digits than its factorization.

16216986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7445.

The product of its digits is 31104, while the sum is 39.

The square root of 16216986 is about 4027.0319094837. The cubic root of 16216986 is about 253.1182041766.

The spelling of 16216986 in words is "sixteen million, two hundred sixteen thousand, nine hundred eighty-six".