28430 has 8 divisors (see below), whose sum is σ = 51192. Its totient is φ = 11368.

The previous prime is 28429. The next prime is 28433. The reversal of 28430 is 3482.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a nialpdrome in base 15.

It is a junction number, because it is equal to n+sod(n) for n = 28399 and 28408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28433) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1412 + ... + 1431.

It is an arithmetic number, because the mean of its divisors is an integer number (6399).

2²⁸⁴³⁰ is an apocalyptic number.

28430 is a deficient number, since it is larger than the sum of its proper divisors (22762).

28430 is a wasteful number, since it uses less digits than its factorization.

28430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2850.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 28430 is about 168.6119805945. The cubic root of 28430 is about 30.5205451470.

The spelling of 28430 in words is "twenty-eight thousand, four hundred thirty".