28646833 has 2 divisors, whose sum is σ = 28646834. Its totient is φ = 28646832.

The previous prime is 28646831. The next prime is 28646857. The reversal of 28646833 is 33864682.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28174864 + 471969 = 5308^2 + 687^2 .

It is a cyclic number.

It is not a de Polignac number, because 28646833 - 2¹ = 28646831 is a prime.

Together with 28646831, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (28646831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14323416 + 14323417.

It is an arithmetic number, because the mean of its divisors is an integer number (14323417).

Almost surely, 2^28646833 is an apocalyptic number.

It is an amenable number.

28646833 is a deficient number, since it is larger than the sum of its proper divisors (1).

28646833 is an equidigital number, since it uses as much as digits as its factorization.

28646833 is an evil number, because the sum of its binary digits is even.

The product of its digits is 165888, while the sum is 40.

The square root of 28646833 is about 5352.2736290291. The cubic root of 28646833 is about 305.9794118035.

The spelling of 28646833 in words is "twenty-eight million, six hundred forty-six thousand, eight hundred thirty-three".