22990140 has 72 divisors (see below), whose sum is σ = 70128240. Its totient is φ = 6096384.

The previous prime is 22990139. The next prime is 22990151. The reversal of 22990140 is 4109922.

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, 60471 + ... + 60849.

Almost surely, 2^22990140 is an apocalyptic number.

22990140 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 22990140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35064120).

22990140 is an abundant number, since it is smaller than the sum of its proper divisors (47138100).

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

22990140 is a wasteful number, since it uses less digits than its factorization.

22990140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 731 (or 726 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 22990140 is about 4794.8034370556. The cubic root of 22990140 is about 284.3460537296.

The spelling of 22990140 in words is "twenty-two million, nine hundred ninety thousand, one hundred forty".