28851307 has 2 divisors, whose sum is σ = 28851308. Its totient is φ = 28851306.

The previous prime is 28851301. The next prime is 28851311. The reversal of 28851307 is 70315882.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28851307 is a prime.

It is not a weakly prime, because it can be changed into another prime (28851301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14425653 + 14425654.

It is an arithmetic number, because the mean of its divisors is an integer number (14425654).

Almost surely, 2^28851307 is an apocalyptic number.

28851307 is a deficient number, since it is larger than the sum of its proper divisors (1).

28851307 is an equidigital number, since it uses as much as digits as its factorization.

28851307 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13440, while the sum is 34.

The square root of 28851307 is about 5371.3412663878. The cubic root of 28851307 is about 306.7056882975.

The spelling of 28851307 in words is "twenty-eight million, eight hundred fifty-one thousand, three hundred seven".