223740720 has 240 divisors, whose sum is σ = 869087232. Its totient is φ = 50526720.

The previous prime is 223740707. The next prime is 223740743. The reversal of 223740720 is 27047322.

223740720 is a `hidden beast` number, since 2 + 237 + 407 + 20 = 666.

It is a tau number, because it is divible by the number of its divisors (240).

It is a super-2 number, since 2×223740720² = 100119819572236800, which contains 22 as substring.

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 47 ways as a sum of consecutive naturals, for example, 518905 + ... + 519335.

Almost surely, 2^223740720 is an apocalyptic number.

223740720 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 223740720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (434543616).

223740720 is an abundant number, since it is smaller than the sum of its proper divisors (645346512).

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

223740720 is a wasteful number, since it uses less digits than its factorization.

223740720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 560 (or 551 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 27.

The square root of 223740720 is about 14957.9651022457. The cubic root of 223740720 is about 607.0833804582.

The spelling of 223740720 in words is "two hundred twenty-three million, seven hundred forty thousand, seven hundred twenty".