22285881 has 8 divisors (see below), whose sum is σ = 33016160. Its totient is φ = 14857236.

The previous prime is 22285871. The next prime is 22285883. The reversal of 22285881 is 18858222.

It is a happy number.

It is not a de Polignac number, because 22285881 - 2⁶ = 22285817 is a prime.

It is a super-2 number, since 2×22285881² = 993320983892322, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (22285883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 412675 + ... + 412728.

It is an arithmetic number, because the mean of its divisors is an integer number (4127020).

Almost surely, 2^22285881 is an apocalyptic number.

It is an amenable number.

22285881 is a deficient number, since it is larger than the sum of its proper divisors (10730279).

22285881 is an equidigital number, since it uses as much as digits as its factorization.

22285881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 825412 (or 825406 counting only the distinct ones).

The product of its digits is 20480, while the sum is 36.

The square root of 22285881 is about 4720.7924122969. The cubic root of 22285881 is about 281.4124252905.

The spelling of 22285881 in words is "twenty-two million, two hundred eighty-five thousand, eight hundred eighty-one".