22189760 has 56 divisors (see below), whose sum is σ = 55961280. Its totient is φ = 8351744.

The previous prime is 22189729. The next prime is 22189793. The reversal of 22189760 is 6798122.

It is a happy number.

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 22189760.

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, 3401 + ... + 7479.

Almost surely, 2^22189760 is an apocalyptic number.

22189760 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

22189760 is the 2720-th octagonal number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22189760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27980640).

22189760 is an abundant number, since it is smaller than the sum of its proper divisors (33771520).

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

22189760 is a wasteful number, since it uses less digits than its factorization.

22189760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4113 (or 4103 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 22189760 is about 4710.6008109370. The cubic root of 22189760 is about 281.0072565596.

The spelling of 22189760 in words is "twenty-two million, one hundred eighty-nine thousand, seven hundred sixty".