22190880 has 96 divisors (see below), whose sum is σ = 70870464. Its totient is φ = 5835776.

The previous prime is 22190821. The next prime is 22190893. The reversal of 22190880 is 8809122.

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

It is a Harshad number since it is a multiple of its sum of digits (30).

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, 39562 + ... + 40118.

It is an arithmetic number, because the mean of its divisors is an integer number (738234).

Almost surely, 2^22190880 is an apocalyptic number.

22190880 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 22190880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35435232).

22190880 is an abundant number, since it is smaller than the sum of its proper divisors (48679584).

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

22190880 is a wasteful number, since it uses less digits than its factorization.

22190880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 658 (or 650 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 30.

The square root of 22190880 is about 4710.7196902384. The cubic root of 22190880 is about 281.0119843084.

The spelling of 22190880 in words is "twenty-two million, one hundred ninety thousand, eight hundred eighty".