28646333 has 2 divisors, whose sum is σ = 28646334. Its totient is φ = 28646332.

The previous prime is 28646239. The next prime is 28646347. The reversal of 28646333 is 33364682.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18679684 + 9966649 = 4322^2 + 3157^2 .

It is a cyclic number.

It is not a de Polignac number, because 28646333 - 2¹⁴ = 28629949 is a prime.

It is a super-2 number, since 2×28646333² = 1641224788693778, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 28646293 and 28646302.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28646363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14323166 + 14323167.

It is an arithmetic number, because the mean of its divisors is an integer number (14323167).

Almost surely, 2^28646333 is an apocalyptic number.

It is an amenable number.

28646333 is a deficient number, since it is larger than the sum of its proper divisors (1).

28646333 is an equidigital number, since it uses as much as digits as its factorization.

28646333 is an evil number, because the sum of its binary digits is even.

The product of its digits is 62208, while the sum is 35.

The square root of 28646333 is about 5352.2269197036. The cubic root of 28646333 is about 305.9776316114.

The spelling of 28646333 in words is "twenty-eight million, six hundred forty-six thousand, three hundred thirty-three".