16249988 has 12 divisors (see below), whose sum is σ = 28487760. Its totient is φ = 8110632.

The previous prime is 16249963. The next prime is 16250009. The reversal of 16249988 is 88994261.

It is a super-2 number, since 2×16249988² = 528124220000288, which contains 22 as substring.

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, 806 + ... + 5757.

It is an arithmetic number, because the mean of its divisors is an integer number (2373980).

Almost surely, 2^16249988 is an apocalyptic number.

It is an amenable number.

16249988 is a deficient number, since it is larger than the sum of its proper divisors (12237772).

16249988 is a wasteful number, since it uses less digits than its factorization.

16249988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7186 (or 7184 counting only the distinct ones).

The product of its digits is 248832, while the sum is 47.

The square root of 16249988 is about 4031.1273857322. The cubic root of 16249988 is about 253.2897886068.

The spelling of 16249988 in words is "sixteen million, two hundred forty-nine thousand, nine hundred eighty-eight".