220913823 has 16 divisors (see below), whose sum is σ = 318260096. Its totient is φ = 135496800.

The previous prime is 220913821. The next prime is 220913831. The reversal of 220913823 is 328319022.

It is a happy number.

It is not a de Polignac number, because 220913823 - 2¹ = 220913821 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 (220913821) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2748 + ... + 21198.

It is an arithmetic number, because the mean of its divisors is an integer number (19891256).

Almost surely, 2^220913823 is an apocalyptic number.

220913823 is a deficient number, since it is larger than the sum of its proper divisors (97346273).

220913823 is a wasteful number, since it uses less digits than its factorization.

220913823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18774.

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 220913823 is about 14863.1700185391. The cubic root of 220913823 is about 604.5157639725.

The spelling of 220913823 in words is "two hundred twenty million, nine hundred thirteen thousand, eight hundred twenty-three".