22842040 has 96 divisors (see below), whose sum is σ = 57974400. Its totient is φ = 8087040.

The previous prime is 22842031. The next prime is 22842091. The reversal of 22842040 is 4024822.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 209506 + ... + 209614.

It is an arithmetic number, because the mean of its divisors is an integer number (603900).

Almost surely, 2^22842040 is an apocalyptic number.

22842040 is a gapful number since it is divisible by the number (20) 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 22842040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28987200).

22842040 is an abundant number, since it is smaller than the sum of its proper divisors (35132360).

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

22842040 is a wasteful number, since it uses less digits than its factorization.

22842040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177 (or 160 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 22.

The square root of 22842040 is about 4779.3346817313. The cubic root of 22842040 is about 283.7341624027.

Adding to 22842040 its reverse (4024822), we get a palindrome (26866862).

The spelling of 22842040 in words is "twenty-two million, eight hundred forty-two thousand, forty".