28314577 has 2 divisors, whose sum is σ = 28314578. Its totient is φ = 28314576.

The previous prime is 28314547. The next prime is 28314581. The reversal of 28314577 is 77541382.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27973521 + 341056 = 5289^2 + 584^2 .

It is a cyclic number.

It is not a de Polignac number, because 28314577 - 2¹⁵ = 28281809 is a prime.

It is not a weakly prime, because it can be changed into another prime (28314547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14157288 + 14157289.

It is an arithmetic number, because the mean of its divisors is an integer number (14157289).

Almost surely, 2^28314577 is an apocalyptic number.

It is an amenable number.

28314577 is a deficient number, since it is larger than the sum of its proper divisors (1).

28314577 is an equidigital number, since it uses as much as digits as its factorization.

28314577 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 47040, while the sum is 37.

The square root of 28314577 is about 5321.1443318144. The cubic root of 28314577 is about 304.7918565541.

The spelling of 28314577 in words is "twenty-eight million, three hundred fourteen thousand, five hundred seventy-seven".