28000752828078 has 16 divisors (see below), whose sum is σ = 59295711871440. Its totient is φ = 8784549906816.

The previous prime is 28000752828049. The next prime is 28000752828079. The reversal of 28000752828078 is 87082825700082.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28000752828079) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 137258592193 + ... + 137258592396.

It is an arithmetic number, because the mean of its divisors is an integer number (3705981991965).

Almost surely, 2^{28000752828078} is an apocalyptic number.

28000752828078 is an abundant number, since it is smaller than the sum of its proper divisors (31294959043362).

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

28000752828078 is a wasteful number, since it uses less digits than its factorization.

28000752828078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 274517184611.

The product of its (nonzero) digits is 8028160, while the sum is 57.

The spelling of 28000752828078 in words is "twenty-eight trillion, seven hundred fifty-two million, eight hundred twenty-eight thousand, seventy-eight".