28706544078 has 16 divisors (see below), whose sum is σ = 57437959296. Its totient is φ = 9564702840.

The previous prime is 28706544067. The next prime is 28706544089. The reversal of 28706544078 is 87044560782.

It is an interprime number because it is at equal distance from previous prime (28706544067) and next prime (28706544089).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 28706544078.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1021276 + ... + 1049007.

It is an arithmetic number, because the mean of its divisors is an integer number (3589872456).

Almost surely, 2^28706544078 is an apocalyptic number.

28706544078 is an abundant number, since it is smaller than the sum of its proper divisors (28731415218).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28706544078 is a wasteful number, since it uses less digits than its factorization.

28706544078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2072599.

The product of its (nonzero) digits is 3010560, while the sum is 51.

The spelling of 28706544078 in words is "twenty-eight billion, seven hundred six million, five hundred forty-four thousand, seventy-eight".