22590940 has 48 divisors (see below), whose sum is σ = 49674240. Its totient is φ = 8619840.

The previous prime is 22590937. The next prime is 22590949. The reversal of 22590940 is 4909522.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22590949) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51241 + ... + 51679.

It is an arithmetic number, because the mean of its divisors is an integer number (1034880).

Almost surely, 2^22590940 is an apocalyptic number.

22590940 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 22590940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24837120).

22590940 is an abundant number, since it is smaller than the sum of its proper divisors (27083300).

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

22590940 is a wasteful number, since it uses less digits than its factorization.

22590940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 562 (or 560 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 22590940 is about 4752.9927414209. The cubic root of 22590940 is about 282.6906432383.

The spelling of 22590940 in words is "twenty-two million, five hundred ninety thousand, nine hundred forty".