28000002979 has 24 divisors (see below), whose sum is σ = 30933585072. Its totient is φ = 25324041600.

The previous prime is 28000002929. The next prime is 28000003007. The reversal of 28000002979 is 97920000082.

It is not a de Polignac number, because 28000002979 - 2²⁵ = 27966448547 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28000002929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8480629 + ... + 8483929.

It is an arithmetic number, because the mean of its divisors is an integer number (1288899378).

Almost surely, 2^28000002979 is an apocalyptic number.

28000002979 is a deficient number, since it is larger than the sum of its proper divisors (2933582093).

28000002979 is a wasteful number, since it uses less digits than its factorization.

28000002979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4327 (or 4314 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 37.

The spelling of 28000002979 in words is "twenty-eight billion, two thousand, nine hundred seventy-nine".