20020219 has 4 divisors (see below), whose sum is σ = 20561344. Its totient is φ = 19479096.

The previous prime is 20020207. The next prime is 20020223. The reversal of 20020219 is 91202002.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 20020219 - 2¹¹ = 20018171 is a prime.

It is a super-2 number, since 2×20020219² = 801618337615922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20020279) 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 in 3 ways as a sum of consecutive naturals, for example, 270507 + ... + 270580.

It is an arithmetic number, because the mean of its divisors is an integer number (5140336).

Almost surely, 2^20020219 is an apocalyptic number.

20020219 is a deficient number, since it is larger than the sum of its proper divisors (541125).

20020219 is an equidigital number, since it uses as much as digits as its factorization.

20020219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 541124.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 20020219 is about 4474.3959368835. The cubic root of 20020219 is about 271.5332022021.

The spelling of 20020219 in words is "twenty million, twenty thousand, two hundred nineteen".