19982047 has 6 divisors (see below), whose sum is σ = 20483024. Its totient is φ = 19493040.

The previous prime is 19982029. The next prime is 19982063. The reversal of 19982047 is 74028991.

It is a de Polignac number, because none of the positive numbers 2^k-19982047 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19982747) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4263 + ... + 7624.

Almost surely, 2^19982047 is an apocalyptic number.

19982047 is a deficient number, since it is larger than the sum of its proper divisors (500977).

19982047 is an equidigital number, since it uses as much as digits as its factorization.

19982047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11969 (or 11928 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 40.

The square root of 19982047 is about 4470.1282979351. The cubic root of 19982047 is about 271.3605174459.

The spelling of 19982047 in words is "nineteen million, nine hundred eighty-two thousand, forty-seven".