28906673 has 2 divisors, whose sum is σ = 28906674. Its totient is φ = 28906672.

The previous prime is 28906667. The next prime is 28906687. The reversal of 28906673 is 37660982.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21464689 + 7441984 = 4633^2 + 2728^2 .

It is a cyclic number.

It is not a de Polignac number, because 28906673 - 2¹⁰ = 28905649 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 28906673.

It is not a weakly prime, because it can be changed into another prime (28906693) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14453336 + 14453337.

It is an arithmetic number, because the mean of its divisors is an integer number (14453337).

Almost surely, 2^28906673 is an apocalyptic number.

It is an amenable number.

28906673 is a deficient number, since it is larger than the sum of its proper divisors (1).

28906673 is an equidigital number, since it uses as much as digits as its factorization.

28906673 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108864, while the sum is 41.

The square root of 28906673 is about 5376.4926299587. The cubic root of 28906673 is about 306.9017535504.

The spelling of 28906673 in words is "twenty-eight million, nine hundred six thousand, six hundred seventy-three".