28741 has 4 divisors (see below), whose sum is σ = 29484. Its totient is φ = 28000.

The previous prime is 28729. The next prime is 28751. The reversal of 28741 is 14782.

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 12100 + 16641 = 110^2 + 129^2 .

It is a cyclic number.

It is not a de Polignac number, because 28741 - 2⁹ = 28229 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28711) 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, 310 + ... + 391.

It is an arithmetic number, because the mean of its divisors is an integer number (7371).

2²⁸⁷⁴¹ is an apocalyptic number.

It is an amenable number.

28741 is a deficient number, since it is larger than the sum of its proper divisors (743).

28741 is an equidigital number, since it uses as much as digits as its factorization.

28741 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 742.

The product of its digits is 448, while the sum is 22.

The square root of 28741 is about 169.5317079487. The cubic root of 28741 is about 30.6314313856.

The spelling of 28741 in words is "twenty-eight thousand, seven hundred forty-one".