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22088 = 2311251

22088 has 16 divisors (see below), whose sum is σ = 45360. Its totient is φ = 10000.

The previous prime is 22079. The next prime is 22091. The reversal of 22088 is 88022.

It is a nialpdrome in base 8.

It is an unprimeable number.

22088 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38 + ... + 213.

It is an arithmetic number, because the mean of its divisors is an integer number (2835).

222088 is an apocalyptic number.

It is an amenable number.

22088 is an abundant number, since it is smaller than the sum of its proper divisors (23272).

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

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22680).

22088 is a wasteful number, since it uses less digits than its factorization.

22088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 268 (or 264 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

The square root of 22088 is about 148.6203216253. The cubic root of 22088 is about 28.0577041273.

The spelling of 22088 in words is "twenty-two thousand, eighty-eight".

Divisors: 1 2 4 8 11 22 44 88 251 502 1004 2008 2761 5522 11044 22088