28533970797 has 16 divisors (see below), whose sum is σ = 38143560000. Its totient is φ = 18973573632.

The previous prime is 28533970789. The next prime is 28533970819. The reversal of 28533970797 is 79707933582.

It is not a de Polignac number, because 28533970797 - 2³ = 28533970789 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28533970797.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28533971797) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2193003 + ... + 2205975.

It is an arithmetic number, because the mean of its divisors is an integer number (2383972500).

Almost surely, 2^28533970797 is an apocalyptic number.

It is an amenable number.

28533970797 is a deficient number, since it is larger than the sum of its proper divisors (9609589203).

28533970797 is a wasteful number, since it uses less digits than its factorization.

28533970797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14812.

The product of its (nonzero) digits is 20003760, while the sum is 60.

The spelling of 28533970797 in words is "twenty-eight billion, five hundred thirty-three million, nine hundred seventy thousand, seven hundred ninety-seven".