22445730 has 24 divisors (see below), whose sum is σ = 58359132. Its totient is φ = 5985504.

The previous prime is 22445713. The next prime is 22445741. The reversal of 22445730 is 3754422.

It can be written as a sum of positive squares in 2 ways, for example, as 22439169 + 6561 = 4737^2 + 81^2 .

It is a junction number, because it is equal to n+sod(n) for n = 22445694 and 22445703.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 124609 + ... + 124788.

Almost surely, 2^22445730 is an apocalyptic number.

22445730 is an abundant number, since it is smaller than the sum of its proper divisors (35913402).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22445730 is a wasteful number, since it uses less digits than its factorization.

22445730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249410 (or 249407 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 27.

The square root of 22445730 is about 4737.6924763011. The cubic root of 22445730 is about 282.0836480390.

It can be divided in two parts, 224 and 45730, that added together give a palindrome (45954).

The spelling of 22445730 in words is "twenty-two million, four hundred forty-five thousand, seven hundred thirty".