28532929 has 2 divisors, whose sum is σ = 28532930. Its totient is φ = 28532928.

The previous prime is 28532899. The next prime is 28532971. The reversal of 28532929 is 92923582.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25522704 + 3010225 = 5052^2 + 1735^2 .

It is a cyclic number.

It is not a de Polignac number, because 28532929 - 2⁹ = 28532417 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28532891 and 28532900.

It is not a weakly prime, because it can be changed into another prime (28532429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14266464 + 14266465.

It is an arithmetic number, because the mean of its divisors is an integer number (14266465).

Almost surely, 2^28532929 is an apocalyptic number.

It is an amenable number.

28532929 is a deficient number, since it is larger than the sum of its proper divisors (1).

28532929 is an equidigital number, since it uses as much as digits as its factorization.

28532929 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 77760, while the sum is 40.

The square root of 28532929 is about 5341.6223191087. The cubic root of 28532929 is about 305.5733334792.

The spelling of 28532929 in words is "twenty-eight million, five hundred thirty-two thousand, nine hundred twenty-nine".