28484 has 6 divisors (see below), whose sum is σ = 49854. Its totient is φ = 14240.

The previous prime is 28477. The next prime is 28493. The reversal of 28484 is 48482.

It can be written as a sum of positive squares in only one way, i.e., 16384 + 12100 = 128^2 + 110^2 .

It is a super-2 number, since 2×28484² = 1622676512, which contains 22 as substring.

It is a nialpdrome in base 13.

It is an unprimeable number.

28484 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3557 + ... + 3564.

It is an arithmetic number, because the mean of its divisors is an integer number (8309).

2²⁸⁴⁸⁴ is an apocalyptic number.

It is an amenable number.

28484 is a deficient number, since it is larger than the sum of its proper divisors (21370).

28484 is a wasteful number, since it uses less digits than its factorization.

28484 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7125 (or 7123 counting only the distinct ones).

The product of its digits is 2048, while the sum is 26.

The square root of 28484 is about 168.7720355983. The cubic root of 28484 is about 30.5398565207.

It can be divided in two parts, 28 and 484, that added together give a 9-th power (512 = 2⁹).

The spelling of 28484 in words is "twenty-eight thousand, four hundred eighty-four".