28084012078 has 8 divisors (see below), whose sum is σ = 42209769168. Its totient is φ = 14014089024.

The previous prime is 28084012057. The next prime is 28084012091. The reversal of 28084012078 is 87021048082.

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

It is a self number, because there is not a number n which added to its sum of digits gives 28084012078.

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, 13957251 + ... + 13959262.

It is an arithmetic number, because the mean of its divisors is an integer number (5276221146).

Almost surely, 2^28084012078 is an apocalyptic number.

28084012078 is a deficient number, since it is larger than the sum of its proper divisors (14125757090).

28084012078 is a wasteful number, since it uses less digits than its factorization.

28084012078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27917018.

The product of its (nonzero) digits is 57344, while the sum is 40.

The spelling of 28084012078 in words is "twenty-eight billion, eighty-four million, twelve thousand, seventy-eight".