28693319 has 2 divisors, whose sum is σ = 28693320. Its totient is φ = 28693318.

The previous prime is 28693309. The next prime is 28693361. The reversal of 28693319 is 91339682.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28693319 - 2⁴ = 28693303 is a prime.

It is a super-2 number, since 2×28693319² = 1646613110471522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28693309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14346659 + 14346660.

It is an arithmetic number, because the mean of its divisors is an integer number (14346660).

Almost surely, 2^28693319 is an apocalyptic number.

28693319 is a deficient number, since it is larger than the sum of its proper divisors (1).

28693319 is an equidigital number, since it uses as much as digits as its factorization.

28693319 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 69984, while the sum is 41.

The square root of 28693319 is about 5356.6145091839. The cubic root of 28693319 is about 306.1448294153.

The spelling of 28693319 in words is "twenty-eight million, six hundred ninety-three thousand, three hundred nineteen".