16940913 has 32 divisors (see below), whose sum is σ = 26611200. Its totient is φ = 9475200.

The previous prime is 16940909. The next prime is 16940923. The reversal of 16940913 is 31904961.

It is not a de Polignac number, because 16940913 - 2² = 16940909 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (16940923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 25378 + ... + 26036.

It is an arithmetic number, because the mean of its divisors is an integer number (831600).

Almost surely, 2^16940913 is an apocalyptic number.

It is an amenable number.

16940913 is a deficient number, since it is larger than the sum of its proper divisors (9670287).

16940913 is a wasteful number, since it uses less digits than its factorization.

16940913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 733.

The product of its (nonzero) digits is 5832, while the sum is 33.

The square root of 16940913 is about 4115.9340373723. The cubic root of 16940913 is about 256.8299126412.

The spelling of 16940913 in words is "sixteen million, nine hundred forty thousand, nine hundred thirteen".