22691043 has 16 divisors (see below), whose sum is σ = 33731200. Its totient is φ = 15075720.

The previous prime is 22691033. The next prime is 22691047. The reversal of 22691043 is 34019622.

It is not a de Polignac number, because 22691043 - 2⁶ = 22690979 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22690998 and 22691016.

It is not an unprimeable number, because it can be changed into a prime (22691047) 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, 7668 + ... + 10206.

It is an arithmetic number, because the mean of its divisors is an integer number (2108200).

Almost surely, 2^22691043 is an apocalyptic number.

22691043 is a deficient number, since it is larger than the sum of its proper divisors (11040157).

22691043 is a wasteful number, since it uses less digits than its factorization.

22691043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2879 (or 2873 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 22691043 is about 4763.5116248415. The cubic root of 22691043 is about 283.1075727179.

The spelling of 22691043 in words is "twenty-two million, six hundred ninety-one thousand, forty-three".