28273859 has 2 divisors, whose sum is σ = 28273860. Its totient is φ = 28273858.

The previous prime is 28273841. The next prime is 28273871. The reversal of 28273859 is 95837282.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28273859 - 2¹² = 28269763 is a prime.

It is a super-2 number, since 2×28273859² = 1598822205503762, which contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (28273459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14136929 + 14136930.

It is an arithmetic number, because the mean of its divisors is an integer number (14136930).

Almost surely, 2^28273859 is an apocalyptic number.

28273859 is a deficient number, since it is larger than the sum of its proper divisors (1).

28273859 is an equidigital number, since it uses as much as digits as its factorization.

28273859 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 241920, while the sum is 44.

The square root of 28273859 is about 5317.3168985871. The cubic root of 28273859 is about 304.6456836884.

The spelling of 28273859 in words is "twenty-eight million, two hundred seventy-three thousand, eight hundred fifty-nine".