223734440 has 64 divisors (see below), whose sum is σ = 527592960. Its totient is φ = 85282560.

The previous prime is 223734421. The next prime is 223734473. The reversal of 223734440 is 44437322.

It is a super-2 number, since 2×223734440² = 100114199284227200, which contains 22 as substring.

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, 81734 + ... + 84426.

It is an arithmetic number, because the mean of its divisors is an integer number (8243640).

Almost surely, 2^223734440 is an apocalyptic number.

223734440 is a gapful number since it is divisible by the number (20) 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 223734440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (263796480).

223734440 is an abundant number, since it is smaller than the sum of its proper divisors (303858520).

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

223734440 is a wasteful number, since it uses less digits than its factorization.

223734440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2802 (or 2798 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 29.

The square root of 223734440 is about 14957.7551791704. The cubic root of 223734440 is about 607.0777004918.

The spelling of 223734440 in words is "two hundred twenty-three million, seven hundred thirty-four thousand, four hundred forty".