28446 has 16 divisors (see below), whose sum is σ = 62208. Its totient is φ = 8600.

The previous prime is 28439. The next prime is 28447. The reversal of 28446 is 64482.

It is a Curzon number.

It is a plaindrome in base 12.

It is a nialpdrome in base 13 and base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28447) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 150 + ... + 281.

It is an arithmetic number, because the mean of its divisors is an integer number (3888).

2²⁸⁴⁴⁶ is an apocalyptic number.

28446 is an abundant number, since it is smaller than the sum of its proper divisors (33762).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31104).

28446 is a wasteful number, since it uses less digits than its factorization.

28446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 447.

The product of its digits is 1536, while the sum is 24.

The square root of 28446 is about 168.6594201342. The cubic root of 28446 is about 30.5262695829.

It can be divided in two parts, 2844 and 6, that added together give a triangular number (2850 = T₇₅).

The spelling of 28446 in words is "twenty-eight thousand, four hundred forty-six".