28222159 has 8 divisors (see below), whose sum is σ = 34151328. Its totient is φ = 22767360.

The previous prime is 28222153. The next prime is 28222169. The reversal of 28222159 is 95122282.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 28222159 - 2⁷ = 28222031 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 28222159.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28222153) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 118462 + ... + 118699.

It is an arithmetic number, because the mean of its divisors is an integer number (4268916).

Almost surely, 2^28222159 is an apocalyptic number.

28222159 is a deficient number, since it is larger than the sum of its proper divisors (5929169).

28222159 is a wasteful number, since it uses less digits than its factorization.

28222159 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 237185.

The product of its digits is 5760, while the sum is 31.

The square root of 28222159 is about 5312.4531997939. The cubic root of 28222159 is about 304.4598843654.

The spelling of 28222159 in words is "twenty-eight million, two hundred twenty-two thousand, one hundred fifty-nine".