220028239 has 4 divisors (see below), whose sum is σ = 220133056. Its totient is φ = 219923424.

The previous prime is 220028231. The next prime is 220028251. The reversal of 220028239 is 932820022.

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 220028239 - 2³ = 220028231 is a prime.

It is a super-2 number, since 2×220028239² = 96824851914882242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220028231) 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, 49194 + ... + 53479.

It is an arithmetic number, because the mean of its divisors is an integer number (55033264).

Almost surely, 2^220028239 is an apocalyptic number.

220028239 is a deficient number, since it is larger than the sum of its proper divisors (104817).

220028239 is a wasteful number, since it uses less digits than its factorization.

220028239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104816.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 220028239 is about 14833.3488801417. The cubic root of 220028239 is about 603.7069018926.

The spelling of 220028239 in words is "two hundred twenty million, twenty-eight thousand, two hundred thirty-nine".