28485 has 16 divisors (see below), whose sum is σ = 50880. Its totient is φ = 15120.

The previous prime is 28477. The next prime is 28493. The reversal of 28485 is 58482.

It is an interprime number because it is at equal distance from previous prime (28477) and next prime (28493).

It is not a de Polignac number, because 28485 - 2³ = 28477 is a prime.

It is a super-2 number, since 2×28485² = 1622790450, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a plaindrome in base 12.

It is a nialpdrome in base 13.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30 + ... + 240.

It is an arithmetic number, because the mean of its divisors is an integer number (3180).

2²⁸⁴⁸⁵ is an apocalyptic number.

It is an amenable number.

28485 is a deficient number, since it is larger than the sum of its proper divisors (22395).

28485 is a wasteful number, since it uses less digits than its factorization.

28485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225 (or 219 counting only the distinct ones).

The product of its digits is 2560, while the sum is 27.

The square root of 28485 is about 168.7749981484. The cubic root of 28485 is about 30.5402139084.

The spelling of 28485 in words is "twenty-eight thousand, four hundred eighty-five".