28403029 has 2 divisors, whose sum is σ = 28403030. Its totient is φ = 28403028.

The previous prime is 28403021. The next prime is 28403033. The reversal of 28403029 is 92030482.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22752900 + 5650129 = 4770^2 + 2377^2 .

It is a cyclic number.

It is not a de Polignac number, because 28403029 - 2³ = 28403021 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 28402988 and 28403006.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28403021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14201514 + 14201515.

It is an arithmetic number, because the mean of its divisors is an integer number (14201515).

Almost surely, 2^28403029 is an apocalyptic number.

It is an amenable number.

28403029 is a deficient number, since it is larger than the sum of its proper divisors (1).

28403029 is an equidigital number, since it uses as much as digits as its factorization.

28403029 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 28403029 is about 5329.4492210734. The cubic root of 28403029 is about 305.1089067318.

The spelling of 28403029 in words is "twenty-eight million, four hundred three thousand, twenty-nine".