28877678326 has 32 divisors (see below), whose sum is σ = 50538470400. Its totient is φ = 12370371048.

The previous prime is 28877678317. The next prime is 28877678329. The reversal of 28877678326 is 62387677882.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28877678329) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1670041 + ... + 1687243.

It is an arithmetic number, because the mean of its divisors is an integer number (1579327200).

Almost surely, 2^28877678326 is an apocalyptic number.

28877678326 is a deficient number, since it is larger than the sum of its proper divisors (21660792074).

28877678326 is a wasteful number, since it uses less digits than its factorization.

28877678326 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19673 (or 19659 counting only the distinct ones).

The product of its digits is 75866112, while the sum is 64.

The spelling of 28877678326 in words is "twenty-eight billion, eight hundred seventy-seven million, six hundred seventy-eight thousand, three hundred twenty-six".