28504031429 has 2 divisors, whose sum is σ = 28504031430. Its totient is φ = 28504031428.

The previous prime is 28504031327. The next prime is 28504031447. The reversal of 28504031429 is 92413040582.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15519428929 + 12984602500 = 124577^2 + 113950^2 .

It is a cyclic number.

It is not a de Polignac number, because 28504031429 - 2¹² = 28504027333 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28504031392 and 28504031401.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28504031459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14252015714 + 14252015715.

It is an arithmetic number, because the mean of its divisors is an integer number (14252015715).

Almost surely, 2^28504031429 is an apocalyptic number.

It is an amenable number.

28504031429 is a deficient number, since it is larger than the sum of its proper divisors (1).

28504031429 is an equidigital number, since it uses as much as digits as its factorization.

28504031429 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 69120, while the sum is 38.

The spelling of 28504031429 in words is "twenty-eight billion, five hundred four million, thirty-one thousand, four hundred twenty-nine".