28316478838 has 4 divisors (see below), whose sum is σ = 42474718260. Its totient is φ = 14158239418.

The previous prime is 28316478803. The next prime is 28316478847. The reversal of 28316478838 is 83887461382.

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 polite number, since it can be written as a sum of consecutive naturals, namely, 7079119708 + ... + 7079119711.

It is an arithmetic number, because the mean of its divisors is an integer number (10618679565).

Almost surely, 2^28316478838 is an apocalyptic number.

28316478838 is a deficient number, since it is larger than the sum of its proper divisors (14158239422).

28316478838 is a wasteful number, since it uses less digits than its factorization.

28316478838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14158239421.

The product of its digits is 12386304, while the sum is 58.

The spelling of 28316478838 in words is "twenty-eight billion, three hundred sixteen million, four hundred seventy-eight thousand, eight hundred thirty-eight".