22823643 has 4 divisors (see below), whose sum is σ = 30431528. Its totient is φ = 15215760.

The previous prime is 22823629. The next prime is 22823651. The reversal of 22823643 is 34632822.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 22823643 - 2⁵ = 22823611 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22823643.

It is not an unprimeable number, because it can be changed into a prime (22823243) 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 3 ways as a sum of consecutive naturals, for example, 3803938 + ... + 3803943.

It is an arithmetic number, because the mean of its divisors is an integer number (7607882).

Almost surely, 2^22823643 is an apocalyptic number.

22823643 is a deficient number, since it is larger than the sum of its proper divisors (7607885).

22823643 is an equidigital number, since it uses as much as digits as its factorization.

22823643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7607884.

The product of its digits is 13824, while the sum is 30.

The square root of 22823643 is about 4777.4096537768. The cubic root of 22823643 is about 283.6579686919.

It can be divided in two parts, 228 and 23643, that added together give a triangular number (23871 = T₂₁₈).

The spelling of 22823643 in words is "twenty-two million, eight hundred twenty-three thousand, six hundred forty-three".