28465920807 has 16 divisors (see below), whose sum is σ = 39092104800. Its totient is φ = 18411449472.

The previous prime is 28465920781. The next prime is 28465920811. The reversal of 28465920807 is 70802956482.

It is not a de Polignac number, because 28465920807 - 2¹⁵ = 28465888039 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28465920807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28465920817) 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, 328668 + ... + 406145.

It is an arithmetic number, because the mean of its divisors is an integer number (2443256550).

Almost surely, 2^28465920807 is an apocalyptic number.

28465920807 is a deficient number, since it is larger than the sum of its proper divisors (10626183993).

28465920807 is a wasteful number, since it uses less digits than its factorization.

28465920807 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 735202.

The product of its (nonzero) digits is 1935360, while the sum is 51.

The spelling of 28465920807 in words is "twenty-eight billion, four hundred sixty-five million, nine hundred twenty thousand, eight hundred seven".