28980004779 has 24 divisors (see below), whose sum is σ = 46527082992. Its totient is φ = 17232246720.

The previous prime is 28980004769. The next prime is 28980004793. The reversal of 28980004779 is 97740008982.

It is not a de Polignac number, because 28980004779 - 2⁴ = 28980004763 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28980004769) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2756332 + ... + 2766825.

It is an arithmetic number, because the mean of its divisors is an integer number (1938628458).

Almost surely, 2^28980004779 is an apocalyptic number.

28980004779 is a deficient number, since it is larger than the sum of its proper divisors (17547078213).

28980004779 is a wasteful number, since it uses less digits than its factorization.

28980004779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5523227 (or 5523224 counting only the distinct ones).

The product of its (nonzero) digits is 2032128, while the sum is 54.

The spelling of 28980004779 in words is "twenty-eight billion, nine hundred eighty million, four thousand, seven hundred seventy-nine".