22745473 has 4 divisors (see below), whose sum is σ = 24083460. Its totient is φ = 21407488.

The previous prime is 22745453. The next prime is 22745477. The reversal of 22745473 is 37454722.

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 14265729 + 8479744 = 3777^2 + 2912^2 .

It is not a de Polignac number, because 22745473 - 2⁵ = 22745441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22745477) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 668968 + ... + 669001.

It is an arithmetic number, because the mean of its divisors is an integer number (6020865).

Almost surely, 2^22745473 is an apocalyptic number.

It is an amenable number.

22745473 is a deficient number, since it is larger than the sum of its proper divisors (1337987).

22745473 is a wasteful number, since it uses less digits than its factorization.

22745473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1337986.

The product of its digits is 47040, while the sum is 34.

The square root of 22745473 is about 4769.2214249288. The cubic root of 22745473 is about 283.3337594765. Note that the first 3 decimals are identical.

The spelling of 22745473 in words is "twenty-two million, seven hundred forty-five thousand, four hundred seventy-three".