22545404 has 24 divisors (see below), whose sum is σ = 45238368. Its totient is φ = 9630720.

The previous prime is 22545379. The next prime is 22545407. The reversal of 22545404 is 40454522.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22545407) 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, 8744 + ... + 11024.

It is an arithmetic number, because the mean of its divisors is an integer number (1884932).

Almost surely, 2^22545404 is an apocalyptic number.

It is an amenable number.

22545404 is an abundant number, since it is smaller than the sum of its proper divisors (22692964).

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

22545404 is a wasteful number, since it uses less digits than its factorization.

22545404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2645 (or 2643 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 26.

The square root of 22545404 is about 4748.2000800303. The cubic root of 22545404 is about 282.5005779611.

Adding to 22545404 its reverse (40454522), we get a palindrome (62999926).

The spelling of 22545404 in words is "twenty-two million, five hundred forty-five thousand, four hundred four".