22885940 has 108 divisors (see below), whose sum is σ = 61769988. Its totient is φ = 7096320.

The previous prime is 22885939. The next prime is 22885949. The reversal of 22885940 is 4958822.

It can be written as a sum of positive squares in 2 ways, for example, as 6853924 + 16032016 = 2618^2 + 4004^2 .

It is a junction number, because it is equal to n+sod(n) for n = 22885894 and 22885903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22885949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 118484 + ... + 118676.

Almost surely, 2^22885940 is an apocalyptic number.

22885940 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 22885940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30884994).

22885940 is an abundant number, since it is smaller than the sum of its proper divisors (38884048).

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

22885940 is a wasteful number, since it uses less digits than its factorization.

22885940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238 (or 218 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 38.

The square root of 22885940 is about 4783.9251666388. The cubic root of 22885940 is about 283.9158151590.

It can be divided in two parts, 2288 and 5940, that added together give a palindrome (8228).

The spelling of 22885940 in words is "twenty-two million, eight hundred eighty-five thousand, nine hundred forty".