16944081 has 16 divisors (see below), whose sum is σ = 28167168. Its totient is φ = 8802000.

The previous prime is 16944071. The next prime is 16944089. The reversal of 16944081 is 18044961.

It is not a de Polignac number, because 16944081 - 2¹⁵ = 16911313 is a prime.

It is a super-2 number, since 2×16944081² = 574203761869122, which contains 22 as substring.

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (16944089) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36445 + ... + 36906.

It is an arithmetic number, because the mean of its divisors is an integer number (1760448).

Almost surely, 2^16944081 is an apocalyptic number.

16944081 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

16944081 is a deficient number, since it is larger than the sum of its proper divisors (11223087).

16944081 is a wasteful number, since it uses less digits than its factorization.

16944081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73372.

The product of its (nonzero) digits is 6912, while the sum is 33.

The square root of 16944081 is about 4116.3188651998. The cubic root of 16944081 is about 256.8459209569.

It can be divided in two parts, 1694 and 4081, that added together give a palindrome (5775).

The spelling of 16944081 in words is "sixteen million, nine hundred forty-four thousand, eighty-one".