28715833 has 2 divisors, whose sum is σ = 28715834. Its totient is φ = 28715832.

The previous prime is 28715807. The next prime is 28715837. The reversal of 28715833 is 33851782.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18558864 + 10156969 = 4308^2 + 3187^2 .

It is a cyclic number.

It is not a de Polignac number, because 28715833 - 2⁹ = 28715321 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28715792 and 28715801.

It is not a weakly prime, because it can be changed into another prime (28715837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14357916 + 14357917.

It is an arithmetic number, because the mean of its divisors is an integer number (14357917).

Almost surely, 2^28715833 is an apocalyptic number.

It is an amenable number.

28715833 is a deficient number, since it is larger than the sum of its proper divisors (1).

28715833 is an equidigital number, since it uses as much as digits as its factorization.

28715833 is an evil number, because the sum of its binary digits is even.

The product of its digits is 40320, while the sum is 37.

The square root of 28715833 is about 5358.7156110396. The cubic root of 28715833 is about 306.2248799054.

The spelling of 28715833 in words is "twenty-eight million, seven hundred fifteen thousand, eight hundred thirty-three".