223780720 has 20 divisors (see below), whose sum is σ = 520290360. Its totient is φ = 89512256.

The previous prime is 223780709. The next prime is 223780759. The reversal of 223780720 is 27087322.

223780720 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1398550 + ... + 1398709.

It is an arithmetic number, because the mean of its divisors is an integer number (26014518).

Almost surely, 2^223780720 is an apocalyptic number.

223780720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

223780720 is an abundant number, since it is smaller than the sum of its proper divisors (296509640).

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

223780720 is a wasteful number, since it uses less digits than its factorization.

223780720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2797272 (or 2797266 counting only the distinct ones).

The product of its (nonzero) digits is 9408, while the sum is 31.

The square root of 223780720 is about 14959.3021227596. The cubic root of 223780720 is about 607.1195560937.

The spelling of 223780720 in words is "two hundred twenty-three million, seven hundred eighty thousand, seven hundred twenty".