16813992 has 32 divisors (see below), whose sum is σ = 45269280. Its totient is φ = 5173440.

The previous prime is 16813991. The next prime is 16813999. The reversal of 16813992 is 29931861.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 16813992.

It is not an unprimeable number, because it can be changed into a prime (16813991) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26634 + ... + 27257.

It is an arithmetic number, because the mean of its divisors is an integer number (1414665).

Almost surely, 2^16813992 is an apocalyptic number.

16813992 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

16813992 is an abundant number, since it is smaller than the sum of its proper divisors (28455288).

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

16813992 is a wasteful number, since it uses less digits than its factorization.

16813992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53913 (or 53909 counting only the distinct ones).

The product of its digits is 23328, while the sum is 39.

The square root of 16813992 is about 4100.4868003690. The cubic root of 16813992 is about 256.1869159008.

The spelling of 16813992 in words is "sixteen million, eight hundred thirteen thousand, nine hundred ninety-two".