22590040 has 32 divisors (see below), whose sum is σ = 55449360. Its totient is φ = 8214400.

The previous prime is 22590037. The next prime is 22590077. The reversal of 22590040 is 4009522.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 22589993 and 22590020.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 25231 + ... + 26110.

Almost surely, 2^22590040 is an apocalyptic number.

22590040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22590040 is an abundant number, since it is smaller than the sum of its proper divisors (32859320).

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

22590040 is a wasteful number, since it uses less digits than its factorization.

22590040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51363 (or 51359 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 22590040 is about 4752.8980632873. The cubic root of 22590040 is about 282.6868891529.

Adding to 22590040 its reverse (4009522), we get a palindrome (26599562).

The spelling of 22590040 in words is "twenty-two million, five hundred ninety thousand, forty".