22928280 has 64 divisors (see below), whose sum is σ = 69279840. Its totient is φ = 6070272.

The previous prime is 22928273. The next prime is 22928303. The reversal of 22928280 is 8282922.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18232 + ... + 19448.

Almost surely, 2^22928280 is an apocalyptic number.

22928280 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 22928280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34639920).

22928280 is an abundant number, since it is smaller than the sum of its proper divisors (46351560).

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

22928280 is a wasteful number, since it uses less digits than its factorization.

22928280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1388 (or 1384 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 33.

The square root of 22928280 is about 4788.3483582546. The cubic root of 22928280 is about 284.0907928979.

The spelling of 22928280 in words is "twenty-two million, nine hundred twenty-eight thousand, two hundred eighty".