28779146994 has 32 divisors (see below), whose sum is σ = 62112181824. Its totient is φ = 8837075520.

The previous prime is 28779146959. The next prime is 28779147041. The reversal of 28779146994 is 49964197782.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 337429 + ... + 414024.

It is an arithmetic number, because the mean of its divisors is an integer number (1941005682).

Almost surely, 2^28779146994 is an apocalyptic number.

28779146994 is an abundant number, since it is smaller than the sum of its proper divisors (33333034830).

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

28779146994 is a wasteful number, since it uses less digits than its factorization.

28779146994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 751962.

The product of its digits is 54867456, while the sum is 66.

The spelling of 28779146994 in words is "twenty-eight billion, seven hundred seventy-nine million, one hundred forty-six thousand, nine hundred ninety-four".