22274280 has 96 divisors (see below), whose sum is σ = 82742400. Its totient is φ = 5090688.

The previous prime is 22274279. The next prime is 22274299. The reversal of 22274280 is 8247222.

It is a super-2 number, since 2×22274280² = 992287099036800, which contains 22 as substring.

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, 1900 + ... + 6939.

It is an arithmetic number, because the mean of its divisors is an integer number (861900).

Almost surely, 2^22274280 is an apocalyptic number.

22274280 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 22274280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41371200).

22274280 is an abundant number, since it is smaller than the sum of its proper divisors (60468120).

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

22274280 is a wasteful number, since it uses less digits than its factorization.

22274280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8863 (or 8856 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 27.

The square root of 22274280 is about 4719.5635391422. The cubic root of 22274280 is about 281.3635867128.

The spelling of 22274280 in words is "twenty-two million, two hundred seventy-four thousand, two hundred eighty".