28465678390 has 64 divisors (see below), whose sum is σ = 56285798400. Its totient is φ = 10318302720.

The previous prime is 28465678379. The next prime is 28465678391. The reversal of 28465678390 is 9387656482.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28465678391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1035159 + ... + 1062301.

It is an arithmetic number, because the mean of its divisors is an integer number (879465600).

Almost surely, 2^28465678390 is an apocalyptic number.

28465678390 is a deficient number, since it is larger than the sum of its proper divisors (27820120010).

28465678390 is a wasteful number, since it uses less digits than its factorization.

28465678390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27397.

The product of its (nonzero) digits is 17418240, while the sum is 58.

The spelling of 28465678390 in words is "twenty-eight billion, four hundred sixty-five million, six hundred seventy-eight thousand, three hundred ninety".