22841940 has 96 divisors (see below), whose sum is σ = 71197056. Its totient is φ = 5424640.

The previous prime is 22841927. The next prime is 22841941. The reversal of 22841940 is 4914822.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 22841898 and 22841907.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22841941) 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 31 ways as a sum of consecutive naturals, for example, 34654 + ... + 35306.

It is an arithmetic number, because the mean of its divisors is an integer number (741636).

Almost surely, 2^22841940 is an apocalyptic number.

22841940 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 22841940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35598528).

22841940 is an abundant number, since it is smaller than the sum of its proper divisors (48355116).

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

22841940 is a wasteful number, since it uses less digits than its factorization.

22841940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 729 (or 727 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 22841940 is about 4779.3242200127. The cubic root of 22841940 is about 283.7337483496.

It can be divided in two parts, 2284 and 1940, that added together give a palindrome (4224).

The spelling of 22841940 in words is "twenty-two million, eight hundred forty-one thousand, nine hundred forty".