22113280 has 88 divisors (see below), whose sum is σ = 60722208. Its totient is φ = 7569408.

The previous prime is 22113263. The next prime is 22113353. The reversal of 22113280 is 8231122.

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, 35532 + ... + 36148.

Almost surely, 2^22113280 is an apocalyptic number.

22113280 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 22113280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30361104).

22113280 is an abundant number, since it is smaller than the sum of its proper divisors (38608928).

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

22113280 is an equidigital number, since it uses as much as digits as its factorization.

22113280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 649 (or 631 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 22113280 is about 4702.4759435855. The cubic root of 22113280 is about 280.6840418063.

The spelling of 22113280 in words is "twenty-two million, one hundred thirteen thousand, two hundred eighty".