22259520 has 168 divisors, whose sum is σ = 78455520. Its totient is φ = 5790720.

The previous prime is 22259513. The next prime is 22259527. The reversal of 22259520 is 2595222.

It is an interprime number because it is at equal distance from previous prime (22259513) and next prime (22259527).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22259527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 169855 + ... + 169985.

Almost surely, 2^22259520 is an apocalyptic number.

22259520 is a gapful number since it is divisible by the number (20) 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 22259520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39227760).

22259520 is an abundant number, since it is smaller than the sum of its proper divisors (56196000).

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

22259520 is a wasteful number, since it uses less digits than its factorization.

22259520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213 (or 200 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 22259520 is about 4717.9995760915. Note that the first 3 decimals coincide. The cubic root of 22259520 is about 281.3014246708.

It can be divided in two parts, 2 and 2259520, that added together give a palindrome (2259522).

The spelling of 22259520 in words is "twenty-two million, two hundred fifty-nine thousand, five hundred twenty".