22928819 has 2 divisors, whose sum is σ = 22928820. Its totient is φ = 22928818.

The previous prime is 22928813. The next prime is 22928837. The reversal of 22928819 is 91882922.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22928819 - 2¹² = 22924723 is a prime.

It is a super-2 number, since 2×22928819² = 1051461481469522, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (22928813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11464409 + 11464410.

It is an arithmetic number, because the mean of its divisors is an integer number (11464410).

Almost surely, 2^22928819 is an apocalyptic number.

22928819 is a deficient number, since it is larger than the sum of its proper divisors (1).

22928819 is an equidigital number, since it uses as much as digits as its factorization.

22928819 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 41472, while the sum is 41.

The square root of 22928819 is about 4788.4046403787. The cubic root of 22928819 is about 284.0930190241.

It can be divided in two parts, 2292 and 8819, that added together give a palindrome (11111).

The spelling of 22928819 in words is "twenty-two million, nine hundred twenty-eight thousand, eight hundred nineteen".