28080979 has 2 divisors, whose sum is σ = 28080980. Its totient is φ = 28080978.

The previous prime is 28080967. The next prime is 28081007. The reversal of 28080979 is 97908082.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28080979 - 2⁷ = 28080851 is a prime.

It is not a weakly prime, because it can be changed into another prime (28080779) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14040489 + 14040490.

It is an arithmetic number, because the mean of its divisors is an integer number (14040490).

Almost surely, 2^28080979 is an apocalyptic number.

28080979 is a deficient number, since it is larger than the sum of its proper divisors (1).

28080979 is an equidigital number, since it uses as much as digits as its factorization.

28080979 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72576, while the sum is 43.

The square root of 28080979 is about 5299.1488939263. The cubic root of 28080979 is about 303.9513534521.

The spelling of 28080979 in words is "twenty-eight million, eighty thousand, nine hundred seventy-nine".