28842368978 has 8 divisors (see below), whose sum is σ = 43379542668. Its totient is φ = 14382521424.

The previous prime is 28842368953. The next prime is 28842368983. The reversal of 28842368978 is 87986324882.

It can be written as a sum of positive squares in 2 ways, for example, as 28573507369 + 268861609 = 169037^2 + 16397^2 .

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

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, 19330601 + ... + 19332092.

Almost surely, 2^28842368978 is an apocalyptic number.

28842368978 is a deficient number, since it is larger than the sum of its proper divisors (14537173690).

28842368978 is a wasteful number, since it uses less digits than its factorization.

28842368978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38663068.

The product of its digits is 74317824, while the sum is 65.

The spelling of 28842368978 in words is "twenty-eight billion, eight hundred forty-two million, three hundred sixty-eight thousand, nine hundred seventy-eight".