22815629 has 2 divisors, whose sum is σ = 22815630. Its totient is φ = 22815628.

The previous prime is 22815623. The next prime is 22815673. The reversal of 22815629 is 92651822.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15225604 + 7590025 = 3902^2 + 2755^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22815629 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22815623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11407814 + 11407815.

It is an arithmetic number, because the mean of its divisors is an integer number (11407815).

Almost surely, 2^22815629 is an apocalyptic number.

It is an amenable number.

22815629 is a deficient number, since it is larger than the sum of its proper divisors (1).

22815629 is an equidigital number, since it uses as much as digits as its factorization.

22815629 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17280, while the sum is 35.

The square root of 22815629 is about 4776.5708410951. The cubic root of 22815629 is about 283.6247648036.

The spelling of 22815629 in words is "twenty-two million, eight hundred fifteen thousand, six hundred twenty-nine".