20003219 has 4 divisors (see below), whose sum is σ = 21056040. Its totient is φ = 18950400.

The previous prime is 20003201. The next prime is 20003227. The reversal of 20003219 is 91230002.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20003219 is a prime.

It is a super-2 number, since 2×20003219² = 800257540723922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20003197 and 20003206.

It is not an unprimeable number, because it can be changed into a prime (20003719) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 526382 + ... + 526419.

It is an arithmetic number, because the mean of its divisors is an integer number (5264010).

Almost surely, 2^20003219 is an apocalyptic number.

20003219 is a deficient number, since it is larger than the sum of its proper divisors (1052821).

20003219 is a wasteful number, since it uses less digits than its factorization.

20003219 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1052820.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 20003219 is about 4472.4958356604. The cubic root of 20003219 is about 271.4563237288.

The spelling of 20003219 in words is "twenty million, three thousand, two hundred nineteen".