28189359 has 12 divisors (see below), whose sum is σ = 44419752. Its totient is φ = 17084400.

The previous prime is 28189309. The next prime is 28189393. The reversal of 28189359 is 95398182.

It is a happy number.

It is not a de Polignac number, because 28189359 - 2¹² = 28185263 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28189309) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 142272 + ... + 142469.

It is an arithmetic number, because the mean of its divisors is an integer number (3701646).

Almost surely, 2^28189359 is an apocalyptic number.

28189359 is a deficient number, since it is larger than the sum of its proper divisors (16230393).

28189359 is a wasteful number, since it uses less digits than its factorization.

28189359 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284758 (or 284755 counting only the distinct ones).

The product of its digits is 155520, while the sum is 45.

The square root of 28189359 is about 5309.3652162947. The cubic root of 28189359 is about 304.3418901395.

The spelling of 28189359 in words is "twenty-eight million, one hundred eighty-nine thousand, three hundred fifty-nine".