22812645 has 32 divisors (see below), whose sum is σ = 37584000. Its totient is φ = 11811584.

The previous prime is 22812641. The next prime is 22812653. The reversal of 22812645 is 54621822.

It is a cyclic number.

It is not a de Polignac number, because 22812645 - 2² = 22812641 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22812641) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 131779 + ... + 131951.

It is an arithmetic number, because the mean of its divisors is an integer number (1174500).

Almost surely, 2^22812645 is an apocalyptic number.

It is an amenable number.

22812645 is a deficient number, since it is larger than the sum of its proper divisors (14771355).

22812645 is a wasteful number, since it uses less digits than its factorization.

22812645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 389.

The product of its digits is 7680, while the sum is 30.

The square root of 22812645 is about 4776.2584729053. The cubic root of 22812645 is about 283.6123994027.

The spelling of 22812645 in words is "twenty-two million, eight hundred twelve thousand, six hundred forty-five".