22879643 has 4 divisors (see below), whose sum is σ = 23617728. Its totient is φ = 22141560.

The previous prime is 22879639. The next prime is 22879657. The reversal of 22879643 is 34697822.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 22879643 - 2² = 22879639 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 22879643.

It is not an unprimeable number, because it can be changed into a prime (22879613) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 368996 + ... + 369057.

It is an arithmetic number, because the mean of its divisors is an integer number (5904432).

Almost surely, 2^22879643 is an apocalyptic number.

22879643 is a deficient number, since it is larger than the sum of its proper divisors (738085).

22879643 is an equidigital number, since it uses as much as digits as its factorization.

22879643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 738084.

The product of its digits is 145152, while the sum is 41.

The square root of 22879643 is about 4783.2669797953. The cubic root of 22879643 is about 283.8897732328.

The spelling of 22879643 in words is "twenty-two million, eight hundred seventy-nine thousand, six hundred forty-three".