28773113 has 2 divisors, whose sum is σ = 28773114. Its totient is φ = 28773112.

The previous prime is 28773097. The next prime is 28773119. The reversal of 28773113 is 31137782.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26915344 + 1857769 = 5188^2 + 1363^2 .

It is a cyclic number.

It is not a de Polignac number, because 28773113 - 2⁴ = 28773097 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28773113.

It is not a weakly prime, because it can be changed into another prime (28773119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14386556 + 14386557.

It is an arithmetic number, because the mean of its divisors is an integer number (14386557).

Almost surely, 2^28773113 is an apocalyptic number.

It is an amenable number.

28773113 is a deficient number, since it is larger than the sum of its proper divisors (1).

28773113 is an equidigital number, since it uses as much as digits as its factorization.

28773113 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7056, while the sum is 32.

The square root of 28773113 is about 5364.0575127416. The cubic root of 28773113 is about 306.4283554724.

The spelling of 28773113 in words is "twenty-eight million, seven hundred seventy-three thousand, one hundred thirteen".