223923456 has 108 divisors (see below), whose sum is σ = 683724132. Its totient is φ = 70238208.

The previous prime is 223923449. The next prime is 223923461. The reversal of 223923456 is 654329322.

It is a happy number.

223923456 is a `hidden beast` number, since 223 + 92 + 345 + 6 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 153363456 + 70560000 = 12384^2 + 8400^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 223923456.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 36310 + ... + 42026.

It is an arithmetic number, because the mean of its divisors is an integer number (6330779).

Almost surely, 2^223923456 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 223923456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (341862066).

223923456 is an abundant number, since it is smaller than the sum of its proper divisors (459800676).

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

223923456 is a wasteful number, since it uses less digits than its factorization.

223923456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5756 (or 5739 counting only the distinct ones).

The product of its digits is 77760, while the sum is 36.

The square root of 223923456 is about 14964.0721730417. The cubic root of 223923456 is about 607.2486101053.

The spelling of 223923456 in words is "two hundred twenty-three million, nine hundred twenty-three thousand, four hundred fifty-six".