22280790 has 96 divisors (see below), whose sum is σ = 65007360. Its totient is φ = 4863936.

The previous prime is 22280779. The next prime is 22280801. The reversal of 22280790 is 9708222.

It is an interprime number because it is at equal distance from previous prime (22280779) and next prime (22280801).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 33481 + ... + 34139.

It is an arithmetic number, because the mean of its divisors is an integer number (677160).

Almost surely, 2^22280790 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22280790, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32503680).

22280790 is an abundant number, since it is smaller than the sum of its proper divisors (42726570).

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

22280790 is a wasteful number, since it uses less digits than its factorization.

22280790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 706 (or 699 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 22280790 is about 4720.2531711763. The cubic root of 22280790 is about 281.3909949842.

The spelling of 22280790 in words is "twenty-two million, two hundred eighty thousand, seven hundred ninety".