22886813 has 2 divisors, whose sum is σ = 22886814. Its totient is φ = 22886812.

The previous prime is 22886803. The next prime is 22886819. The reversal of 22886813 is 31868822.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21548164 + 1338649 = 4642^2 + 1157^2 .

It is a cyclic number.

It is not a de Polignac number, because 22886813 - 2⁸ = 22886557 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22886819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11443406 + 11443407.

It is an arithmetic number, because the mean of its divisors is an integer number (11443407).

Almost surely, 2^22886813 is an apocalyptic number.

It is an amenable number.

22886813 is a deficient number, since it is larger than the sum of its proper divisors (1).

22886813 is an equidigital number, since it uses as much as digits as its factorization.

22886813 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36864, while the sum is 38.

The square root of 22886813 is about 4784.0164088347. The cubic root of 22886813 is about 283.9194251681.

Subtracting 22886813 from its reverse (31868822), we obtain a square (8982009 = 2997²).

The spelling of 22886813 in words is "twenty-two million, eight hundred eighty-six thousand, eight hundred thirteen".