28870259 has 16 divisors (see below), whose sum is σ = 32269920. Its totient is φ = 25608960.

The previous prime is 28870241. The next prime is 28870279. The reversal of 28870259 is 95207882.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28870259 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28870229) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 125957 + ... + 126185.

It is an arithmetic number, because the mean of its divisors is an integer number (2016870).

Almost surely, 2^28870259 is an apocalyptic number.

28870259 is a deficient number, since it is larger than the sum of its proper divisors (3399661).

28870259 is a wasteful number, since it uses less digits than its factorization.

28870259 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 470.

The product of its (nonzero) digits is 80640, while the sum is 41.

The square root of 28870259 is about 5373.1051543777. The cubic root of 28870259 is about 306.7728304194.

The spelling of 28870259 in words is "twenty-eight million, eight hundred seventy thousand, two hundred fifty-nine".