28495 has 8 divisors (see below), whose sum is σ = 35280. Its totient is φ = 22080.

The previous prime is 28493. The next prime is 28499. The reversal of 28495 is 59482.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 28495 - 2¹ = 28493 is a prime.

It is a nialpdrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28493) 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, 136 + ... + 274.

It is an arithmetic number, because the mean of its divisors is an integer number (4410).

2²⁸⁴⁹⁵ is an apocalyptic number.

28495 is a deficient number, since it is larger than the sum of its proper divisors (6785).

28495 is a wasteful number, since it uses less digits than its factorization.

28495 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185.

The product of its digits is 2880, while the sum is 28.

The square root of 28495 is about 168.8046207898. The cubic root of 28495 is about 30.5437873261.

Adding to 28495 its product of digits (2880), we get a triangular number (31375 = T₂₅₀).

The spelling of 28495 in words is "twenty-eight thousand, four hundred ninety-five".