22128382 has 4 divisors (see below), whose sum is σ = 33192576. Its totient is φ = 11064190.

The previous prime is 22128371. The next prime is 22128409. The reversal of 22128382 is 28382122.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 22128382.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5532094 + ... + 5532097.

It is an arithmetic number, because the mean of its divisors is an integer number (8298144).

Almost surely, 2^22128382 is an apocalyptic number.

22128382 is a deficient number, since it is larger than the sum of its proper divisors (11064194).

22128382 is a wasteful number, since it uses less digits than its factorization.

22128382 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11064193.

The product of its digits is 3072, while the sum is 28.

The square root of 22128382 is about 4704.0814193634. The cubic root of 22128382 is about 280.7479238687.

The spelling of 22128382 in words is "twenty-two million, one hundred twenty-eight thousand, three hundred eighty-two".