17428993 has 2 divisors, whose sum is σ = 17428994. Its totient is φ = 17428992.

The previous prime is 17428967. The next prime is 17429021. The reversal of 17428993 is 39982471.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17405584 + 23409 = 4172^2 + 153^2 .

It is a cyclic number.

It is not a de Polignac number, because 17428993 - 2¹⁷ = 17297921 is a prime.

It is not a weakly prime, because it can be changed into another prime (17428903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8714496 + 8714497.

It is an arithmetic number, because the mean of its divisors is an integer number (8714497).

Almost surely, 2^17428993 is an apocalyptic number.

It is an amenable number.

17428993 is a deficient number, since it is larger than the sum of its proper divisors (1).

17428993 is an equidigital number, since it uses as much as digits as its factorization.

17428993 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 108864, while the sum is 43.

The square root of 17428993 is about 4174.8045463231. The cubic root of 17428993 is about 259.2730829664.

The spelling of 17428993 in words is "seventeen million, four hundred twenty-eight thousand, nine hundred ninety-three".