28078735404 has 24 divisors (see below), whose sum is σ = 65760614640. Its totient is φ = 9324783424.

The previous prime is 28078735387. The next prime is 28078735481. The reversal of 28078735404 is 40453787082.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4346019 + ... + 4352474.

It is an arithmetic number, because the mean of its divisors is an integer number (2740025610).

Almost surely, 2^28078735404 is an apocalyptic number.

It is an amenable number.

28078735404 is an abundant number, since it is smaller than the sum of its proper divisors (37681879236).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28078735404 is a wasteful number, since it uses less digits than its factorization.

28078735404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8698769 (or 8698767 counting only the distinct ones).

The product of its (nonzero) digits is 1505280, while the sum is 48.

The spelling of 28078735404 in words is "twenty-eight billion, seventy-eight million, seven hundred thirty-five thousand, four hundred four".