28030502752529 has 4 divisors (see below), whose sum is σ = 28030902248484. Its totient is φ = 28030103256576.

The previous prime is 28030502752463. The next prime is 28030502752531. The reversal of 28030502752529 is 92525720503082.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 582878806225 + 27447623946304 = 763465^2 + 5239048^2 .

It is a cyclic number.

It is not a de Polignac number, because 28030502752529 - 2⁴⁰ = 26930991124753 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28030502752559) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 199642712 + ... + 199783065.

It is an arithmetic number, because the mean of its divisors is an integer number (7007725562121).

Almost surely, 2^{28030502752529} is an apocalyptic number.

It is an amenable number.

28030502752529 is a deficient number, since it is larger than the sum of its proper divisors (399495955).

28030502752529 is an equidigital number, since it uses as much as digits as its factorization.

28030502752529 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 399495954.

The product of its (nonzero) digits is 3024000, while the sum is 50.

The spelling of 28030502752529 in words is "twenty-eight trillion, thirty billion, five hundred two million, seven hundred fifty-two thousand, five hundred twenty-nine".