28874 has 4 divisors (see below), whose sum is σ = 43314. Its totient is φ = 14436.

The previous prime is 28871. The next prime is 28879. The reversal of 28874 is 47882.

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

It can be written as a sum of positive squares in only one way, i.e., 24649 + 4225 = 157^2 + 65^2 .

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 28874.

It is not an unprimeable number, because it can be changed into a prime (28871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7217 + ... + 7220.

2²⁸⁸⁷⁴ is an apocalyptic number.

28874 is a deficient number, since it is larger than the sum of its proper divisors (14440).

28874 is a wasteful number, since it uses less digits than its factorization.

28874 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14439.

The product of its digits is 3584, while the sum is 29.

The square root of 28874 is about 169.9235122048. The cubic root of 28874 is about 30.6786080359.

It can be divided in two parts, 288 and 74, that multiplied together give a palindrome (21312).

The spelling of 28874 in words is "twenty-eight thousand, eight hundred seventy-four".