22407990 has 48 divisors (see below), whose sum is σ = 59122224. Its totient is φ = 5431360.

The previous prime is 22407971. The next prime is 22408019. The reversal of 22407990 is 9970422.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 544 + ... + 6716.

It is an arithmetic number, because the mean of its divisors is an integer number (1231713).

Almost surely, 2^22407990 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22407990, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29561112).

22407990 is an abundant number, since it is smaller than the sum of its proper divisors (36714234).

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

22407990 is a wasteful number, since it uses less digits than its factorization.

22407990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6205 (or 6194 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 33.

The square root of 22407990 is about 4733.7078490334. The cubic root of 22407990 is about 281.9254619155.

The spelling of 22407990 in words is "twenty-two million, four hundred seven thousand, nine hundred ninety".