223918656 has 112 divisors (see below), whose sum is σ = 642298944. Its totient is φ = 68438016.

The previous prime is 223918633. The next prime is 223918687. The reversal of 223918656 is 656819322.

223918656 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 706210 + ... + 706526.

It is an arithmetic number, because the mean of its divisors is an integer number (5734812).

Almost surely, 2^223918656 is an apocalyptic number.

223918656 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 223918656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (321149472).

223918656 is an abundant number, since it is smaller than the sum of its proper divisors (418380288).

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

223918656 is a wasteful number, since it uses less digits than its factorization.

223918656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 628 (or 618 counting only the distinct ones).

The product of its digits is 155520, while the sum is 42.

The square root of 223918656 is about 14963.9117880319. The cubic root of 223918656 is about 607.2442711016.

The spelling of 223918656 in words is "two hundred twenty-three million, nine hundred eighteen thousand, six hundred fifty-six".