22296640 has 28 divisors (see below), whose sum is σ = 53094636. Its totient is φ = 8918528.

The previous prime is 22296629. The next prime is 22296643. The reversal of 22296640 is 4669222.

It can be written as a sum of positive squares in 2 ways, for example, as 2795584 + 19501056 = 1672^2 + 4416^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22296643) 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, 34519 + ... + 35158.

It is an arithmetic number, because the mean of its divisors is an integer number (1896237).

Almost surely, 2^22296640 is an apocalyptic number.

22296640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22296640 is an abundant number, since it is smaller than the sum of its proper divisors (30797996).

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

22296640 is an equidigital number, since it uses as much as digits as its factorization.

22296640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69694 (or 69684 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 22296640 is about 4721.9318080633. The cubic root of 22296640 is about 281.4577040207.

The spelling of 22296640 in words is "twenty-two million, two hundred ninety-six thousand, six hundred forty".