28256379 has 16 divisors (see below), whose sum is σ = 38456448. Its totient is φ = 18450432.

The previous prime is 28256377. The next prime is 28256381. The reversal of 28256379 is 97365282.

It is an interprime number because it is at equal distance from previous prime (28256377) and next prime (28256381).

It is not a de Polignac number, because 28256379 - 2¹ = 28256377 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28256379.

It is not an unprimeable number, because it can be changed into a prime (28256377) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51384 + ... + 51930.

It is an arithmetic number, because the mean of its divisors is an integer number (2403528).

Almost surely, 2^28256379 is an apocalyptic number.

28256379 is a deficient number, since it is larger than the sum of its proper divisors (10200069).

28256379 is a wasteful number, since it uses less digits than its factorization.

28256379 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 874.

The product of its digits is 181440, while the sum is 42.

The square root of 28256379 is about 5315.6729583374. The cubic root of 28256379 is about 304.5828894734.

The spelling of 28256379 in words is "twenty-eight million, two hundred fifty-six thousand, three hundred seventy-nine".