28952978979 has 16 divisors (see below), whose sum is σ = 41264907264. Its totient is φ = 18012456000.

The previous prime is 28952978969. The next prime is 28952979037. The reversal of 28952978979 is 97987925982.

It is not a de Polignac number, because 28952978979 - 2⁸ = 28952978723 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28952978979.

It is not an unprimeable number, because it can be changed into a prime (28952978909) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5114347 + ... + 5120004.

It is an arithmetic number, because the mean of its divisors is an integer number (2579056704).

Almost surely, 2^28952978979 is an apocalyptic number.

28952978979 is a deficient number, since it is larger than the sum of its proper divisors (12311928285).

28952978979 is a wasteful number, since it uses less digits than its factorization.

28952978979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10234418.

The product of its digits is 411505920, while the sum is 75.

The spelling of 28952978979 in words is "twenty-eight billion, nine hundred fifty-two million, nine hundred seventy-eight thousand, nine hundred seventy-nine".