22999830 has 64 divisors (see below), whose sum is σ = 65138688. Its totient is φ = 5086080.

The previous prime is 22999819. The next prime is 22999843. The reversal of 22999830 is 3899922.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4744 + ... + 8276.

It is an arithmetic number, because the mean of its divisors is an integer number (1017792).

Almost surely, 2^22999830 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22999830, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32569344).

22999830 is an abundant number, since it is smaller than the sum of its proper divisors (42138858).

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

22999830 is a wasteful number, since it uses less digits than its factorization.

22999830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3581.

The product of its (nonzero) digits is 69984, while the sum is 42.

The square root of 22999830 is about 4795.8137995548. The cubic root of 22999830 is about 284.3859973206.

The spelling of 22999830 in words is "twenty-two million, nine hundred ninety-nine thousand, eight hundred thirty".