22081896 has 96 divisors (see below), whose sum is σ = 63903840. Its totient is φ = 7138368.

The previous prime is 22081877. The next prime is 22081897. The reversal of 22081896 is 69818022.

It is a super-2 number, since 2×22081896² = 975220261909632, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 22081896.

It is not an unprimeable number, because it can be changed into a prime (22081897) 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 23 ways as a sum of consecutive naturals, for example, 71775 + ... + 72081.

It is an arithmetic number, because the mean of its divisors is an integer number (665665).

Almost surely, 2^22081896 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22081896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31951920).

22081896 is an abundant number, since it is smaller than the sum of its proper divisors (41821944).

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

22081896 is a wasteful number, since it uses less digits than its factorization.

22081896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 365 (or 349 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

The square root of 22081896 is about 4699.1377932553. The cubic root of 22081896 is about 280.5511931500.

The spelling of 22081896 in words is "twenty-two million, eighty-one thousand, eight hundred ninety-six".