22528907 has 2 divisors, whose sum is σ = 22528908. Its totient is φ = 22528906.

The previous prime is 22528841. The next prime is 22528931. The reversal of 22528907 is 70982522.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22528907 - 2²⁰ = 21480331 is a prime.

It is a super-2 number, since 2×22528907² = 1015103301229298, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (22528007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11264453 + 11264454.

It is an arithmetic number, because the mean of its divisors is an integer number (11264454).

Almost surely, 2^22528907 is an apocalyptic number.

22528907 is a deficient number, since it is larger than the sum of its proper divisors (1).

22528907 is an equidigital number, since it uses as much as digits as its factorization.

22528907 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 22528907 is about 4746.4625775413. The cubic root of 22528907 is about 282.4316570521.

The spelling of 22528907 in words is "twenty-two million, five hundred twenty-eight thousand, nine hundred seven".