220723384 has 32 divisors (see below), whose sum is σ = 479466720. Its totient is φ = 93298176.

The previous prime is 220723381. The next prime is 220723397. The reversal of 220723384 is 483327022.

220723384 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×220723384² = 97437624488822912, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220723381) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22909 + ... + 31084.

It is an arithmetic number, because the mean of its divisors is an integer number (14983335).

Almost surely, 2^220723384 is an apocalyptic number.

It is an amenable number.

220723384 is an abundant number, since it is smaller than the sum of its proper divisors (258743336).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

220723384 is a wasteful number, since it uses less digits than its factorization.

220723384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54079 (or 54075 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 31.

The square root of 220723384 is about 14856.7622313881. The cubic root of 220723384 is about 604.3420062109.

The spelling of 220723384 in words is "two hundred twenty million, seven hundred twenty-three thousand, three hundred eighty-four".