28256153 has 4 divisors (see below), whose sum is σ = 28272180. Its totient is φ = 28240128.

The previous prime is 28256141. The next prime is 28256161. The reversal of 28256153 is 35165282.

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

It can be written as a sum of positive squares in 2 ways, for example, as 23116864 + 5139289 = 4808^2 + 2267^2 .

It is a cyclic number.

It is not a de Polignac number, because 28256153 - 2⁸ = 28255897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28256653) 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, 4988 + ... + 9021.

It is an arithmetic number, because the mean of its divisors is an integer number (7068045).

Almost surely, 2^28256153 is an apocalyptic number.

It is an amenable number.

28256153 is a deficient number, since it is larger than the sum of its proper divisors (16027).

28256153 is a wasteful number, since it uses less digits than its factorization.

28256153 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16026.

The product of its digits is 14400, while the sum is 32.

The square root of 28256153 is about 5315.6517004033. The cubic root of 28256153 is about 304.5820774335.

The spelling of 28256153 in words is "twenty-eight million, two hundred fifty-six thousand, one hundred fifty-three".