22790540 has 36 divisors (see below), whose sum is σ = 50853936. Its totient is φ = 8577792.

The previous prime is 22790513. The next prime is 22790543. The reversal of 22790540 is 4509722.

It is not an unprimeable number, because it can be changed into a prime (22790543) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3809 + ... + 7751.

Almost surely, 2^22790540 is an apocalyptic number.

22790540 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 22790540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25426968).

22790540 is an abundant number, since it is smaller than the sum of its proper divisors (28063396).

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

22790540 is a wasteful number, since it uses less digits than its factorization.

22790540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3986 (or 3967 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 22790540 is about 4773.9438622590. The cubic root of 22790540 is about 283.5207648713.

The spelling of 22790540 in words is "twenty-two million, seven hundred ninety thousand, five hundred forty".