28079773 has 2 divisors, whose sum is σ = 28079774. Its totient is φ = 28079772.

The previous prime is 28079761. The next prime is 28079791. The reversal of 28079773 is 37797082.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22448644 + 5631129 = 4738^2 + 2373^2 .

It is a cyclic number.

It is not a de Polignac number, because 28079773 - 2⁵ = 28079741 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28079713) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14039886 + 14039887.

It is an arithmetic number, because the mean of its divisors is an integer number (14039887).

Almost surely, 2^28079773 is an apocalyptic number.

It is an amenable number.

28079773 is a deficient number, since it is larger than the sum of its proper divisors (1).

28079773 is an equidigital number, since it uses as much as digits as its factorization.

28079773 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 148176, while the sum is 43.

The square root of 28079773 is about 5299.0351008462. The cubic root of 28079773 is about 303.9470021012.

The spelling of 28079773 in words is "twenty-eight million, seventy-nine thousand, seven hundred seventy-three".