22523430 has 32 divisors (see below), whose sum is σ = 55922400. Its totient is φ = 5798912.

The previous prime is 22523429. The next prime is 22523441. The reversal of 22523430 is 3432522.

It is a junction number, because it is equal to n+sod(n) for n = 22523397 and 22523406.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12075 + ... + 13814.

It is an arithmetic number, because the mean of its divisors is an integer number (1747575).

Almost surely, 2^22523430 is an apocalyptic number.

22523430 is an abundant number, since it is smaller than the sum of its proper divisors (33398970).

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

22523430 is a wasteful number, since it uses less digits than its factorization.

22523430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25928.

The product of its (nonzero) digits is 1440, while the sum is 21.

The square root of 22523430 is about 4745.8855864844. The cubic root of 22523430 is about 282.4087678879.

Adding to 22523430 its reverse (3432522), we get a palindrome (25955952).

The spelling of 22523430 in words is "twenty-two million, five hundred twenty-three thousand, four hundred thirty".