22529745 has 56 divisors (see below), whose sum is σ = 46378176. Its totient is φ = 10287648.

The previous prime is 22529729. The next prime is 22529761. The reversal of 22529745 is 54792522.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (22529729) and next prime (22529761).

It is not a de Polignac number, because 22529745 - 2⁴ = 22529729 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 25074 + ... + 25956.

Almost surely, 2^22529745 is an apocalyptic number.

It is an amenable number.

22529745 is an abundant number, since it is smaller than the sum of its proper divisors (23848431).

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

22529745 is an frugal number, since it uses more digits than its factorization.

22529745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 913 (or 898 counting only the distinct ones).

The product of its digits is 50400, while the sum is 36.

The square root of 22529745 is about 4746.5508529879. The cubic root of 22529745 is about 282.4351588464.

The spelling of 22529745 in words is "twenty-two million, five hundred twenty-nine thousand, seven hundred forty-five".