20006019 has 18 divisors (see below), whose sum is σ = 31765188. Its totient is φ = 12124200.

The previous prime is 20006003. The next prime is 20006023. The reversal of 20006019 is 91060002.

It is not a de Polignac number, because 20006019 - 2⁴ = 20006003 is a prime.

It is a super-2 number, since 2×20006019² = 800481592456722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20005992 and 20006010.

It is not an unprimeable number, because it can be changed into a prime (20006219) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 8097 + ... + 10274.

Almost surely, 2^20006019 is an apocalyptic number.

20006019 is a deficient number, since it is larger than the sum of its proper divisors (11759169).

20006019 is a wasteful number, since it uses less digits than its factorization.

20006019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18399 (or 18385 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

The square root of 20006019 is about 4472.8088490344. The cubic root of 20006019 is about 271.4689890610.

The spelling of 20006019 in words is "twenty million, six thousand, nineteen".