22904227 has 2 divisors, whose sum is σ = 22904228. Its totient is φ = 22904226.

The previous prime is 22904197. The next prime is 22904243. The reversal of 22904227 is 72240922.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22904227 is a prime.

It is a super-2 number, since 2×22904227² = 1049207228935058, which contains 22 as substring.

It is equal to p_1442584 and since 22904227 and 1442584 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 22904195 and 22904204.

It is not a weakly prime, because it can be changed into another prime (22904267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11452113 + 11452114.

It is an arithmetic number, because the mean of its divisors is an integer number (11452114).

Almost surely, 2^22904227 is an apocalyptic number.

22904227 is a deficient number, since it is larger than the sum of its proper divisors (1).

22904227 is an equidigital number, since it uses as much as digits as its factorization.

22904227 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 22904227 is about 4785.8360816058. The cubic root of 22904227 is about 283.9914159609.

The spelling of 22904227 in words is "twenty-two million, nine hundred four thousand, two hundred twenty-seven".