28429 has 2 divisors, whose sum is σ = 28430. Its totient is φ = 28428.

The previous prime is 28411. The next prime is 28433. The reversal of 28429 is 92482.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22500 + 5929 = 150^2 + 77^2 .

It is a cyclic number.

It is not a de Polignac number, because 28429 - 2⁹ = 27917 is a prime.

It is a magnanimous number.

28429 is a lucky number.

It is a nialpdrome in base 15.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14214 + 14215.

It is an arithmetic number, because the mean of its divisors is an integer number (14215).

2²⁸⁴²⁹ is an apocalyptic number.

It is an amenable number.

28429 is a deficient number, since it is larger than the sum of its proper divisors (1).

28429 is an equidigital number, since it uses as much as digits as its factorization.

28429 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1152, while the sum is 25.

The square root of 28429 is about 168.6090151801. The cubic root of 28429 is about 30.5201872984.

It can be divided in two parts, 284 and 29, that added together give a palindrome (313).

The spelling of 28429 in words is "twenty-eight thousand, four hundred twenty-nine".