22980640 has 24 divisors (see below), whose sum is σ = 54292140. Its totient is φ = 9192192.

The previous prime is 22980613. The next prime is 22980647. The reversal of 22980640 is 4608922.

It can be written as a sum of positive squares in 2 ways, for example, as 22924944 + 55696 = 4788^2 + 236^2 .

It is not an unprimeable number, because it can be changed into a prime (22980647) 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, 71655 + ... + 71974.

Almost surely, 2^22980640 is an apocalyptic number.

22980640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22980640 is an abundant number, since it is smaller than the sum of its proper divisors (31311500).

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

22980640 is a wasteful number, since it uses less digits than its factorization.

22980640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143644 (or 143636 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 22980640 is about 4793.8126788601. The cubic root of 22980640 is about 284.3068824491.

The spelling of 22980640 in words is "twenty-two million, nine hundred eighty thousand, six hundred forty".