22459645 has 8 divisors (see below), whose sum is σ = 29024856. Its totient is φ = 16585536.

The previous prime is 22459637. The next prime is 22459649. The reversal of 22459645 is 54695422.

It can be written as a sum of positive squares in 4 ways, for example, as 2442969 + 20016676 = 1563^2 + 4474^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22459645 - 2³ = 22459637 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22459649) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 172702 + ... + 172831.

It is an arithmetic number, because the mean of its divisors is an integer number (3628107).

Almost surely, 2^22459645 is an apocalyptic number.

It is an amenable number.

22459645 is a deficient number, since it is larger than the sum of its proper divisors (6565211).

22459645 is a wasteful number, since it uses less digits than its factorization.

22459645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 345551.

The product of its digits is 86400, while the sum is 37.

The square root of 22459645 is about 4739.1607906886. The cubic root of 22459645 is about 282.1419276184.

It can be divided in two parts, 22459 and 645, that added together give a square (23104 = 152²).

The spelling of 22459645 in words is "twenty-two million, four hundred fifty-nine thousand, six hundred forty-five".