22291344 has 60 divisors (see below), whose sum is σ = 62719696. Its totient is φ = 7390656.

The previous prime is 22291333. The next prime is 22291361. The reversal of 22291344 is 44319222.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 40479 + ... + 41025.

Almost surely, 2^22291344 is an apocalyptic number.

22291344 is a gapful number since it is divisible by the number (24) 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 22291344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31359848).

22291344 is an abundant number, since it is smaller than the sum of its proper divisors (40428352).

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

22291344 is a wasteful number, since it uses less digits than its factorization.

22291344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 844 (or 835 counting only the distinct ones).

The product of its digits is 3456, while the sum is 27.

The square root of 22291344 is about 4721.3709873298. The cubic root of 22291344 is about 281.4354178820.

The spelling of 22291344 in words is "twenty-two million, two hundred ninety-one thousand, three hundred forty-four".