28786001 has 2 divisors, whose sum is σ = 28786002. Its totient is φ = 28786000.

The previous prime is 28785983. The next prime is 28786003. The reversal of 28786001 is 10068782.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22278400 + 6507601 = 4720^2 + 2551^2 .

It is a cyclic number.

It is not a de Polignac number, because 28786001 - 2¹⁸ = 28523857 is a prime.

It is a Sophie Germain prime.

Together with 28786003, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (28786003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14393000 + 14393001.

It is an arithmetic number, because the mean of its divisors is an integer number (14393001).

Almost surely, 2^28786001 is an apocalyptic number.

It is an amenable number.

28786001 is a deficient number, since it is larger than the sum of its proper divisors (1).

28786001 is an equidigital number, since it uses as much as digits as its factorization.

28786001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5376, while the sum is 32.

The square root of 28786001 is about 5365.2587076487. The cubic root of 28786001 is about 306.4741002521.

The spelling of 28786001 in words is "twenty-eight million, seven hundred eighty-six thousand, one".