22820779 has 2 divisors, whose sum is σ = 22820780. Its totient is φ = 22820778.

The previous prime is 22820753. The next prime is 22820789. The reversal of 22820779 is 97702822.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22820779 - 2²¹ = 20723627 is a prime.

It is not a weakly prime, because it can be changed into another prime (22820789) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11410389 + 11410390.

It is an arithmetic number, because the mean of its divisors is an integer number (11410390).

Almost surely, 2^22820779 is an apocalyptic number.

22820779 is a deficient number, since it is larger than the sum of its proper divisors (1).

22820779 is an equidigital number, since it uses as much as digits as its factorization.

22820779 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 28224, while the sum is 37.

The square root of 22820779 is about 4777.1099003477. The cubic root of 22820779 is about 283.6461033584.

The spelling of 22820779 in words is "twenty-two million, eight hundred twenty thousand, seven hundred seventy-nine".