28126457078 has 8 divisors (see below), whose sum is σ = 42255301368. Its totient is φ = 14041356624.

The previous prime is 28126457063. The next prime is 28126457141. The reversal of 28126457078 is 87075462182.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10934351 + ... + 10936922.

It is an arithmetic number, because the mean of its divisors is an integer number (5281912671).

Almost surely, 2^28126457078 is an apocalyptic number.

28126457078 is a deficient number, since it is larger than the sum of its proper divisors (14128844290).

28126457078 is a wasteful number, since it uses less digits than its factorization.

28126457078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21871918.

The product of its (nonzero) digits is 1505280, while the sum is 50.

The spelling of 28126457078 in words is "twenty-eight billion, one hundred twenty-six million, four hundred fifty-seven thousand, seventy-eight".