28257367 has 2 divisors, whose sum is σ = 28257368. Its totient is φ = 28257366.

The previous prime is 28257347. The next prime is 28257371. The reversal of 28257367 is 76375282.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28257367 - 2⁷ = 28257239 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28257347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14128683 + 14128684.

It is an arithmetic number, because the mean of its divisors is an integer number (14128684).

Almost surely, 2^28257367 is an apocalyptic number.

28257367 is a deficient number, since it is larger than the sum of its proper divisors (1).

28257367 is an equidigital number, since it uses as much as digits as its factorization.

28257367 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 141120, while the sum is 40.

The square root of 28257367 is about 5315.7658902551. The cubic root of 28257367 is about 304.5864394020.

The spelling of 28257367 in words is "twenty-eight million, two hundred fifty-seven thousand, three hundred sixty-seven".