28526858078 has 4 divisors (see below), whose sum is σ = 42790287120. Its totient is φ = 14263429038.

The previous prime is 28526858053. The next prime is 28526858119. The reversal of 28526858078 is 87085862582.

It is a semiprime because it is the product of two primes.

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 as a sum of consecutive naturals, namely, 7131714518 + ... + 7131714521.

It is an arithmetic number, because the mean of its divisors is an integer number (10697571780).

Almost surely, 2^28526858078 is an apocalyptic number.

28526858078 is a deficient number, since it is larger than the sum of its proper divisors (14263429042).

28526858078 is a wasteful number, since it uses less digits than its factorization.

28526858078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14263429041.

The product of its (nonzero) digits is 17203200, while the sum is 59.

The spelling of 28526858078 in words is "twenty-eight billion, five hundred twenty-six million, eight hundred fifty-eight thousand, seventy-eight".