220020286 has 4 divisors (see below), whose sum is σ = 330030432. Its totient is φ = 110010142.

The previous prime is 220020233. The next prime is 220020289. The reversal of 220020286 is 682020022.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 682020022 = 2 ⋅341010011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220020289) 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, 55005070 + ... + 55005073.

It is an arithmetic number, because the mean of its divisors is an integer number (82507608).

Almost surely, 2^220020286 is an apocalyptic number.

220020286 is a deficient number, since it is larger than the sum of its proper divisors (110010146).

220020286 is a wasteful number, since it uses less digits than its factorization.

220020286 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110010145.

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 220020286 is about 14833.0807993485. The cubic root of 220020286 is about 603.6996280705.

The spelling of 220020286 in words is "two hundred twenty million, twenty thousand, two hundred eighty-six".