28706333 has 2 divisors, whose sum is σ = 28706334. Its totient is φ = 28706332.

The previous prime is 28706311. The next prime is 28706371. The reversal of 28706333 is 33360782.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15031129 + 13675204 = 3877^2 + 3698^2 .

It is a cyclic number.

It is not a de Polignac number, because 28706333 - 2¹⁸ = 28444189 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28706333.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28706303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14353166 + 14353167.

It is an arithmetic number, because the mean of its divisors is an integer number (14353167).

Almost surely, 2^28706333 is an apocalyptic number.

It is an amenable number.

28706333 is a deficient number, since it is larger than the sum of its proper divisors (1).

28706333 is an equidigital number, since it uses as much as digits as its factorization.

28706333 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18144, while the sum is 32.

The square root of 28706333 is about 5357.8291312807. The cubic root of 28706333 is about 306.1911069316.

The spelling of 28706333 in words is "twenty-eight million, seven hundred six thousand, three hundred thirty-three".