28829539 has 2 divisors, whose sum is σ = 28829540. Its totient is φ = 28829538.

The previous prime is 28829531. The next prime is 28829551. The reversal of 28829539 is 93592882.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28829539 - 2³ = 28829531 is a prime.

It is a super-2 number, since 2×28829539² = 1662284637905042, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (28829531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14414769 + 14414770.

It is an arithmetic number, because the mean of its divisors is an integer number (14414770).

Almost surely, 2^28829539 is an apocalyptic number.

28829539 is a deficient number, since it is larger than the sum of its proper divisors (1).

28829539 is an equidigital number, since it uses as much as digits as its factorization.

28829539 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 311040, while the sum is 46.

The square root of 28829539 is about 5369.3145745058. The cubic root of 28829539 is about 306.6285335120.

It can be divided in two parts, 2882 and 9539, that added together give a palindrome (12421).

The spelling of 28829539 in words is "twenty-eight million, eight hundred twenty-nine thousand, five hundred thirty-nine".