22831940 has 12 divisors (see below), whose sum is σ = 47947116. Its totient is φ = 9132768.

The previous prime is 22831937. The next prime is 22831943. The reversal of 22831940 is 4913822.

It is an interprime number because it is at equal distance from previous prime (22831937) and next prime (22831943).

It can be written as a sum of positive squares in 2 ways, for example, as 15936064 + 6895876 = 3992^2 + 2626^2 .

It is not an unprimeable number, because it can be changed into a prime (22831943) 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 3 ways as a sum of consecutive naturals, for example, 570779 + ... + 570818.

It is an arithmetic number, because the mean of its divisors is an integer number (3995593).

Almost surely, 2^22831940 is an apocalyptic number.

22831940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22831940 is an abundant number, since it is smaller than the sum of its proper divisors (25115176).

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

22831940 is a wasteful number, since it uses less digits than its factorization.

22831940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1141606 (or 1141604 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 22831940 is about 4778.2779324773. The cubic root of 22831940 is about 283.6923369277.

The spelling of 22831940 in words is "twenty-two million, eight hundred thirty-one thousand, nine hundred forty".