16998988 has 12 divisors (see below), whose sum is σ = 30774240. Its totient is φ = 8206352.

The previous prime is 16998973. The next prime is 16999013. The reversal of 16998988 is 88989961.

It is a Harshad number since it is a multiple of its sum of digits (58).

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, 73156 + ... + 73387.

It is an arithmetic number, because the mean of its divisors is an integer number (2564520).

Almost surely, 2^16998988 is an apocalyptic number.

It is an amenable number.

16998988 is a deficient number, since it is larger than the sum of its proper divisors (13775252).

16998988 is a wasteful number, since it uses less digits than its factorization.

16998988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146576 (or 146574 counting only the distinct ones).

The product of its digits is 2239488, while the sum is 58.

The square root of 16998988 is about 4122.9829007649. The cubic root of 16998988 is about 257.1230567352.

The spelling of 16998988 in words is "sixteen million, nine hundred ninety-eight thousand, nine hundred eighty-eight".