22910445 has 20 divisors (see below), whose sum is σ = 41069820. Its totient is φ = 12218688.

The previous prime is 22910423. The next prime is 22910453. The reversal of 22910445 is 54401922.

It can be written as a sum of positive squares in 2 ways, for example, as 16695396 + 6215049 = 4086^2 + 2493^2 .

It is not a de Polignac number, because 22910445 - 2⁸ = 22910189 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 27880 + ... + 28689.

It is an arithmetic number, because the mean of its divisors is an integer number (2053491).

Almost surely, 2^22910445 is an apocalyptic number.

It is an amenable number.

22910445 is a deficient number, since it is larger than the sum of its proper divisors (18159375).

22910445 is an equidigital number, since it uses as much as digits as its factorization.

22910445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56586 (or 56577 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 22910445 is about 4786.4856627802. The cubic root of 22910445 is about 284.0171128021.

The spelling of 22910445 in words is "twenty-two million, nine hundred ten thousand, four hundred forty-five".