28022359 has 4 divisors (see below), whose sum is σ = 29497240. Its totient is φ = 26547480.

The previous prime is 28022353. The next prime is 28022383. The reversal of 28022359 is 95322082.

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

It is a cyclic number.

It is not a de Polignac number, because 28022359 - 2⁷ = 28022231 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28022359.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28022353) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 737412 + ... + 737449.

It is an arithmetic number, because the mean of its divisors is an integer number (7374310).

Almost surely, 2^28022359 is an apocalyptic number.

28022359 is a deficient number, since it is larger than the sum of its proper divisors (1474881).

28022359 is a wasteful number, since it uses less digits than its factorization.

28022359 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1474880.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 28022359 is about 5293.6149274385. The cubic root of 28022359 is about 303.7397031740.

The spelling of 28022359 in words is "twenty-eight million, twenty-two thousand, three hundred fifty-nine".