220872423 has 4 divisors (see below), whose sum is σ = 294496568. Its totient is φ = 147248280.

The previous prime is 220872413. The next prime is 220872437. The reversal of 220872423 is 324278022.

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

It is not a de Polignac number, because 220872423 - 2⁵ = 220872391 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220872413) 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, 36812068 + ... + 36812073.

It is an arithmetic number, because the mean of its divisors is an integer number (73624142).

Almost surely, 2^220872423 is an apocalyptic number.

220872423 is a deficient number, since it is larger than the sum of its proper divisors (73624145).

220872423 is an equidigital number, since it uses as much as digits as its factorization.

220872423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73624144.

The product of its (nonzero) digits is 10752, while the sum is 30.

The square root of 220872423 is about 14861.7772490372. Note that the first 3 decimals coincide. The cubic root of 220872423 is about 604.4779988449.

The spelling of 220872423 in words is "two hundred twenty million, eight hundred seventy-two thousand, four hundred twenty-three".