22189220 has 24 divisors (see below), whose sum is σ = 47162304. Its totient is φ = 8768096.

The previous prime is 22189201. The next prime is 22189231. The reversal of 22189220 is 2298122.

It is a super-2 number, since 2×22189220² = 984722968416800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 22189220.

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, 5024 + ... + 8343.

It is an arithmetic number, because the mean of its divisors is an integer number (1965096).

Almost surely, 2^22189220 is an apocalyptic number.

22189220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22189220 is an abundant number, since it is smaller than the sum of its proper divisors (24973084).

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

22189220 is a wasteful number, since it uses less digits than its factorization.

22189220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13459 (or 13457 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 22189220 is about 4710.5434930589. The cubic root of 22189220 is about 281.0049770525.

The spelling of 22189220 in words is "twenty-two million, one hundred eighty-nine thousand, two hundred twenty".