22045842 has 96 divisors (see below), whose sum is σ = 60348288. Its totient is φ = 5660928.

The previous prime is 22045841. The next prime is 22045853. The reversal of 22045842 is 24854022.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (22045841) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 70278 + ... + 70590.

It is an arithmetic number, because the mean of its divisors is an integer number (628628).

Almost surely, 2^22045842 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22045842, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30174144).

22045842 is an abundant number, since it is smaller than the sum of its proper divisors (38302446).

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

22045842 is a wasteful number, since it uses less digits than its factorization.

22045842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 384 (or 381 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 27.

The square root of 22045842 is about 4695.2999904159. The cubic root of 22045842 is about 280.3984209006.

Adding to 22045842 its reverse (24854022), we get a palindrome (46899864).

The spelling of 22045842 in words is "twenty-two million, forty-five thousand, eight hundred forty-two".