19628017 has 2 divisors, whose sum is σ = 19628018. Its totient is φ = 19628016.

The previous prime is 19627963. The next prime is 19628023. The reversal of 19628017 is 71082691.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11048976 + 8579041 = 3324^2 + 2929^2 .

It is a cyclic number.

It is not a de Polignac number, because 19628017 - 2¹⁵ = 19595249 is a prime.

It is not a weakly prime, because it can be changed into another prime (19628027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9814008 + 9814009.

It is an arithmetic number, because the mean of its divisors is an integer number (9814009).

Almost surely, 2^19628017 is an apocalyptic number.

It is an amenable number.

19628017 is a deficient number, since it is larger than the sum of its proper divisors (1).

19628017 is an equidigital number, since it uses as much as digits as its factorization.

19628017 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6048, while the sum is 34.

The square root of 19628017 is about 4430.3517919010. The cubic root of 19628017 is about 269.7483572173.

The spelling of 19628017 in words is "nineteen million, six hundred twenty-eight thousand, seventeen".