16993992 has 32 divisors (see below), whose sum is σ = 43087680. Its totient is φ = 5584320.

The previous prime is 16993969. The next prime is 16994009. The reversal of 16993992 is 29939961.

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, 3283 + ... + 6690.

It is an arithmetic number, because the mean of its divisors is an integer number (1346490).

Almost surely, 2^16993992 is an apocalyptic number.

16993992 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

16993992 is an abundant number, since it is smaller than the sum of its proper divisors (26093688).

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

16993992 is a wasteful number, since it uses less digits than its factorization.

16993992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10053 (or 10049 counting only the distinct ones).

The product of its digits is 236196, while the sum is 48.

The square root of 16993992 is about 4122.3769842168. The cubic root of 16993992 is about 257.0978647913.

The spelling of 16993992 in words is "sixteen million, nine hundred ninety-three thousand, nine hundred ninety-two".