22556424 has 64 divisors (see below), whose sum is σ = 62979840. Its totient is φ = 6672960.

The previous prime is 22556419. The next prime is 22556441. The reversal of 22556424 is 42465522.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 22556391 and 22556400.

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, 10359 + ... + 12345.

It is an arithmetic number, because the mean of its divisors is an integer number (984060).

Almost surely, 2^22556424 is an apocalyptic number.

22556424 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22556424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31489920).

22556424 is an abundant number, since it is smaller than the sum of its proper divisors (40423416).

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

22556424 is a wasteful number, since it uses less digits than its factorization.

22556424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2050 (or 2046 counting only the distinct ones).

The product of its digits is 19200, while the sum is 30.

The square root of 22556424 is about 4749.3603779878. The cubic root of 22556424 is about 282.5465984165.

The spelling of 22556424 in words is "twenty-two million, five hundred fifty-six thousand, four hundred twenty-four".