28486 has 4 divisors (see below), whose sum is σ = 42732. Its totient is φ = 14242.

The previous prime is 28477. The next prime is 28493. The reversal of 28486 is 68482.

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

It is a super-2 number, since 2×28486² = 1622904392, which contains 22 as substring.

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 as a sum of consecutive naturals, namely, 7120 + ... + 7123.

It is an arithmetic number, because the mean of its divisors is an integer number (10683).

2²⁸⁴⁸⁶ is an apocalyptic number.

28486 is a deficient number, since it is larger than the sum of its proper divisors (14246).

28486 is a wasteful number, since it uses less digits than its factorization.

28486 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14245.

The product of its digits is 3072, while the sum is 28.

The square root of 28486 is about 168.7779606465. Note that the first 3 decimals coincide. The cubic root of 28486 is about 30.5405712878.

The spelling of 28486 in words is "twenty-eight thousand, four hundred eighty-six".