28455 has 16 divisors (see below), whose sum is σ = 52224. Its totient is φ = 12960.

The previous prime is 28447. The next prime is 28463. The reversal of 28455 is 55482.

It is an interprime number because it is at equal distance from previous prime (28447) and next prime (28463).

It is not a de Polignac number, because 28455 - 2³ = 28447 is a prime.

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, 31 + ... + 240.

It is an arithmetic number, because the mean of its divisors is an integer number (3264).

2²⁸⁴⁵⁵ is an apocalyptic number.

28455 is a deficient number, since it is larger than the sum of its proper divisors (23769).

28455 is a wasteful number, since it uses less digits than its factorization.

28455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 286.

The product of its digits is 1600, while the sum is 24.

The square root of 28455 is about 168.6860990123. The cubic root of 28455 is about 30.5294886349.

It can be divided in two parts, 2845 and 5, that added together give a triangular number (2850 = T₇₅).

The spelling of 28455 in words is "twenty-eight thousand, four hundred fifty-five".