22843140 has 48 divisors (see below), whose sum is σ = 66745728. Its totient is φ = 5826304.

The previous prime is 22843061. The next prime is 22843147. The reversal of 22843140 is 4134822.

It is a self number, because there is not a number n which added to its sum of digits gives 22843140.

It is not an unprimeable number, because it can be changed into a prime (22843147) 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 15 ways as a sum of consecutive naturals, for example, 6897 + ... + 9656.

It is an arithmetic number, because the mean of its divisors is an integer number (1390536).

Almost surely, 2^22843140 is an apocalyptic number.

22843140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22843140 is an abundant number, since it is smaller than the sum of its proper divisors (43902588).

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

22843140 is a wasteful number, since it uses less digits than its factorization.

22843140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16588 (or 16586 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 24.

The square root of 22843140 is about 4779.4497591250. The cubic root of 22843140 is about 283.7387169079.

Adding to 22843140 its reverse (4134822), we get a palindrome (26977962).

The spelling of 22843140 in words is "twenty-two million, eight hundred forty-three thousand, one hundred forty".