22928645 has 4 divisors (see below), whose sum is σ = 27514380. Its totient is φ = 18342912.

The previous prime is 22928629. The next prime is 22928651. The reversal of 22928645 is 54682922.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3621409 + 19307236 = 1903^2 + 4394^2 .

It is a cyclic number.

It is not a de Polignac number, because 22928645 - 2⁴ = 22928629 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22928599 and 22928608.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2292860 + ... + 2292869.

It is an arithmetic number, because the mean of its divisors is an integer number (6878595).

Almost surely, 2^22928645 is an apocalyptic number.

It is an amenable number.

22928645 is a deficient number, since it is larger than the sum of its proper divisors (4585735).

22928645 is an equidigital number, since it uses as much as digits as its factorization.

22928645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4585734.

The product of its digits is 69120, while the sum is 38.

The square root of 22928645 is about 4788.3864714536. The cubic root of 22928645 is about 284.0923003898.

The spelling of 22928645 in words is "twenty-two million, nine hundred twenty-eight thousand, six hundred forty-five".