22133280 has 96 divisors (see below), whose sum is σ = 75104064. Its totient is φ = 5446656.

The previous prime is 22133273. The next prime is 22133297. The reversal of 22133280 is 8233122.

It is a tau number, because it is divible by the number of its divisors (96).

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, 4467 + ... + 8013.

It is an arithmetic number, because the mean of its divisors is an integer number (782334).

Almost surely, 2^22133280 is an apocalyptic number.

22133280 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 22133280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37552032).

22133280 is an abundant number, since it is smaller than the sum of its proper divisors (52970784).

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

22133280 is a wasteful number, since it uses less digits than its factorization.

22133280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3578 (or 3570 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 22133280 is about 4704.6020022952. The cubic root of 22133280 is about 280.7686363619.

The spelling of 22133280 in words is "twenty-two million, one hundred thirty-three thousand, two hundred eighty".