22430240 has 72 divisors (see below), whose sum is σ = 61664652. Its totient is φ = 7687680.

The previous prime is 22430237. The next prime is 22430257. The reversal of 22430240 is 4203422.

It can be written as a sum of positive squares in 2 ways, for example, as 22391824 + 38416 = 4732^2 + 196^2 .

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, 6410 + ... + 9270.

Almost surely, 2^22430240 is an apocalyptic number.

22430240 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 22430240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30832326).

22430240 is an abundant number, since it is smaller than the sum of its proper divisors (39234412).

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

22430240 is a wasteful number, since it uses less digits than its factorization.

22430240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2890 (or 2875 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 17.

The square root of 22430240 is about 4736.0574320842. The cubic root of 22430240 is about 282.0187436194.

Adding to 22430240 its reverse (4203422), we get a palindrome (26633662).

The spelling of 22430240 in words is "twenty-two million, four hundred thirty thousand, two hundred forty".