22890240 has 108 divisors (see below), whose sum is σ = 79237704. Its totient is φ = 6100992.

The previous prime is 22890181. The next prime is 22890277. The reversal of 22890240 is 4209822.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10527 + ... + 12513.

Almost surely, 2^22890240 is an apocalyptic number.

22890240 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 22890240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39618852).

22890240 is an abundant number, since it is smaller than the sum of its proper divisors (56347464).

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

22890240 is a wasteful number, since it uses less digits than its factorization.

22890240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2014 (or 1997 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 22890240 is about 4784.3745672763. The cubic root of 22890240 is about 283.9335955306.

The spelling of 22890240 in words is "twenty-two million, eight hundred ninety thousand, two hundred forty".