22280768 has 56 divisors (see below), whose sum is σ = 47365920. Its totient is φ = 10368000.

The previous prime is 22280743. The next prime is 22280779. The reversal of 22280768 is 86708222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 88643 + ... + 88893.

It is an arithmetic number, because the mean of its divisors is an integer number (845820).

Almost surely, 2^22280768 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22280768, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23682960).

22280768 is an abundant number, since it is smaller than the sum of its proper divisors (25085152).

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

22280768 is a wasteful number, since it uses less digits than its factorization.

22280768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 355 (or 345 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 35.

The square root of 22280768 is about 4720.2508407923. The cubic root of 22280768 is about 281.3909023693.

The spelling of 22280768 in words is "twenty-two million, two hundred eighty thousand, seven hundred sixty-eight".