22240740 has 24 divisors (see below), whose sum is σ = 62274240. Its totient is φ = 5930848.

The previous prime is 22240739. The next prime is 22240753. The reversal of 22240740 is 4704222.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 185280 + ... + 185399.

It is an arithmetic number, because the mean of its divisors is an integer number (2594760).

Almost surely, 2^22240740 is an apocalyptic number.

22240740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22240740 is an abundant number, since it is smaller than the sum of its proper divisors (40033500).

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

22240740 is a wasteful number, since it uses less digits than its factorization.

22240740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 370691 (or 370689 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 21.

The square root of 22240740 is about 4716.0089058440. The cubic root of 22240740 is about 281.2222925791. Note that the first 4 decimals are identical.

Adding to 22240740 its reverse (4704222), we get a palindrome (26944962).

The spelling of 22240740 in words is "twenty-two million, two hundred forty thousand, seven hundred forty".