22299040 has 24 divisors (see below), whose sum is σ = 52681860. Its totient is φ = 8919552.

The previous prime is 22299023. The next prime is 22299071. The reversal of 22299040 is 4099222.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 20830096 + 1468944 = 4564^2 + 1212^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69525 + ... + 69844.

Almost surely, 2^22299040 is an apocalyptic number.

22299040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22299040 is an abundant number, since it is smaller than the sum of its proper divisors (30382820).

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

22299040 is a wasteful number, since it uses less digits than its factorization.

22299040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139384 (or 139376 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 22299040 is about 4722.1859345011. The cubic root of 22299040 is about 281.4678023174.

The spelling of 22299040 in words is "twenty-two million, two hundred ninety-nine thousand, forty".