22840023 has 16 divisors (see below), whose sum is σ = 31893120. Its totient is φ = 14519904.

The previous prime is 22840019. The next prime is 22840031. The reversal of 22840023 is 32004822.

It is not a de Polignac number, because 22840023 - 2² = 22840019 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22840043) 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 15 ways as a sum of consecutive naturals, for example, 5640 + ... + 8802.

It is an arithmetic number, because the mean of its divisors is an integer number (1993320).

Almost surely, 2^22840023 is an apocalyptic number.

22840023 is a deficient number, since it is larger than the sum of its proper divisors (9053097).

22840023 is a wasteful number, since it uses less digits than its factorization.

22840023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3278.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 22840023 is about 4779.1236644389. The cubic root of 22840023 is about 283.7258107165.

Adding to 22840023 its reverse (32004822), we get a palindrome (54844845).

The spelling of 22840023 in words is "twenty-two million, eight hundred forty thousand, twenty-three".