28433 has 2 divisors, whose sum is σ = 28434. Its totient is φ = 28432.

The previous prime is 28429. The next prime is 28439. The reversal of 28433 is 33482.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23104 + 5329 = 152^2 + 73^2 .

It is a cyclic number.

It is not a de Polignac number, because 28433 - 2² = 28429 is a prime.

It is an Ulam number.

It is a plaindrome in base 12.

It is a nialpdrome in base 13.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 28433.

It is not a weakly prime, because it can be changed into another prime (28439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14216 + 14217.

It is an arithmetic number, because the mean of its divisors is an integer number (14217).

2²⁸⁴³³ is an apocalyptic number.

It is an amenable number.

28433 is a deficient number, since it is larger than the sum of its proper divisors (1).

28433 is an equidigital number, since it uses as much as digits as its factorization.

28433 is an evil number, because the sum of its binary digits is even.

The product of its digits is 576, while the sum is 20.

The square root of 28433 is about 168.6208765248. The cubic root of 28433 is about 30.5216186423.

The spelling of 28433 in words is "twenty-eight thousand, four hundred thirty-three".