22480540 has 12 divisors (see below), whose sum is σ = 47209176. Its totient is φ = 8992208.

The previous prime is 22480537. The next prime is 22480541. The reversal of 22480540 is 4508422.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22480541) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 561994 + ... + 562033.

It is an arithmetic number, because the mean of its divisors is an integer number (3934098).

Almost surely, 2^22480540 is an apocalyptic number.

22480540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22480540 is an abundant number, since it is smaller than the sum of its proper divisors (24728636).

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

22480540 is a wasteful number, since it uses less digits than its factorization.

22480540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1124036 (or 1124034 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 25.

The square root of 22480540 is about 4741.3647824229. The cubic root of 22480540 is about 282.2293960283.

Adding to 22480540 its reverse (4508422), we get a palindrome (26988962).

The spelling of 22480540 in words is "twenty-two million, four hundred eighty thousand, five hundred forty".