22844240 has 20 divisors (see below), whose sum is σ = 53113044. Its totient is φ = 9137664.

The previous prime is 22844231. The next prime is 22844323. The reversal of 22844240 is 4244822.

It can be written as a sum of positive squares in 2 ways, for example, as 12138256 + 10705984 = 3484^2 + 3272^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is an unprimeable number.

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, 142697 + ... + 142856.

Almost surely, 2^22844240 is an apocalyptic number.

22844240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22844240 is an abundant number, since it is smaller than the sum of its proper divisors (30268804).

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

22844240 is a wasteful number, since it uses less digits than its factorization.

22844240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285566 (or 285560 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 26.

The square root of 22844240 is about 4779.5648337479. The cubic root of 22844240 is about 283.7432712669.

The spelling of 22844240 in words is "twenty-two million, eight hundred forty-four thousand, two hundred forty".