22191092 has 48 divisors (see below), whose sum is σ = 48935040. Its totient is φ = 8553600.

The previous prime is 22191079. The next prime is 22191101. The reversal of 22191092 is 29019122.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33242 + ... + 33902.

It is an arithmetic number, because the mean of its divisors is an integer number (1019480).

Almost surely, 2^22191092 is an apocalyptic number.

22191092 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22191092, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24467520).

22191092 is an abundant number, since it is smaller than the sum of its proper divisors (26743948).

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

22191092 is a wasteful number, since it uses less digits than its factorization.

22191092 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 792 (or 790 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 26.

The square root of 22191092 is about 4710.7421920542. The cubic root of 22191092 is about 281.0128791858.

It can be divided in two parts, 22 and 191092, that multiplied together give a palindrome (4204024).

The spelling of 22191092 in words is "twenty-two million, one hundred ninety-one thousand, ninety-two".