22768819 has 2 divisors, whose sum is σ = 22768820. Its totient is φ = 22768818.

The previous prime is 22768771. The next prime is 22768829. The reversal of 22768819 is 91886722.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22768819 - 2¹³ = 22760627 is a prime.

It is a super-2 number, since 2×22768819² = 1036838237309522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (22768829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11384409 + 11384410.

It is an arithmetic number, because the mean of its divisors is an integer number (11384410).

Almost surely, 2^22768819 is an apocalyptic number.

22768819 is a deficient number, since it is larger than the sum of its proper divisors (1).

22768819 is an equidigital number, since it uses as much as digits as its factorization.

22768819 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 96768, while the sum is 43.

The square root of 22768819 is about 4771.6683665150. The cubic root of 22768819 is about 283.4306644463.

The spelling of 22768819 in words is "twenty-two million, seven hundred sixty-eight thousand, eight hundred nineteen".