28928493879 has 8 divisors (see below), whose sum is σ = 38848817280. Its totient is φ = 19146916536.

The previous prime is 28928493857. The next prime is 28928493883. The reversal of 28928493879 is 97839482982.

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

It is not a de Polignac number, because 28928493879 - 2¹³ = 28928485687 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28928493809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34686027 + ... + 34686860.

It is an arithmetic number, because the mean of its divisors is an integer number (4856102160).

Almost surely, 2^28928493879 is an apocalyptic number.

28928493879 is a deficient number, since it is larger than the sum of its proper divisors (9920323401).

28928493879 is a wasteful number, since it uses less digits than its factorization.

28928493879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69373029.

The product of its digits is 125411328, while the sum is 69.

The spelling of 28928493879 in words is "twenty-eight billion, nine hundred twenty-eight million, four hundred ninety-three thousand, eight hundred seventy-nine".