22394288 has 40 divisors (see below), whose sum is σ = 50234880. Its totient is φ = 9472320.

The previous prime is 22394279. The next prime is 22394297. The reversal of 22394288 is 88249322.

It is an interprime number because it is at equal distance from previous prime (22394279) and next prime (22394297).

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 7583 + ... + 10113.

It is an arithmetic number, because the mean of its divisors is an integer number (1255872).

Almost surely, 2^22394288 is an apocalyptic number.

22394288 is a gapful number since it is divisible by the number (28) 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 22394288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25117440).

22394288 is an abundant number, since it is smaller than the sum of its proper divisors (27840592).

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

22394288 is a wasteful number, since it uses less digits than its factorization.

22394288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2625 (or 2619 counting only the distinct ones).

The product of its digits is 55296, while the sum is 38.

The square root of 22394288 is about 4732.2603478676. The cubic root of 22394288 is about 281.8679864299.

The spelling of 22394288 in words is "twenty-two million, three hundred ninety-four thousand, two hundred eighty-eight".