Search a number
28574 = 2713157
BaseRepresentation
bin110111110011110
31110012022
412332132
51403244
6340142
7146210
oct67636
943168
1028574
111a517
1214652
1310010
14a5b0
1586ee
hex6f9e

28574 has 16 divisors (see below), whose sum is σ = 53088. Its totient is φ = 11232.

The previous prime is 28573. The next prime is 28579. The reversal of 28574 is 47582.

It is a Smith number, since the sum of its digits (26) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 104 + ... + 260.

It is an arithmetic number, because the mean of its divisors is an integer number (3318).

228574 is an apocalyptic number.

28574 is a deficient number, since it is larger than the sum of its proper divisors (24514).

28574 is a wasteful number, since it uses less digits than its factorization.

28574 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179.

The product of its digits is 2240, while the sum is 26.

The square root of 28574 is about 169.0384571629. The cubic root of 28574 is about 30.5719879779.

The spelling of 28574 in words is "twenty-eight thousand, five hundred seventy-four".