223265720 has 32 divisors (see below), whose sum is σ = 518555520. Its totient is φ = 86424960.

The previous prime is 223265701. The next prime is 223265723. The reversal of 223265720 is 27562322.

It is a super-3 number, since 3×223265720³ (a number of 26 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223265723) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 88787 + ... + 91266.

It is an arithmetic number, because the mean of its divisors is an integer number (16204860).

Almost surely, 2^223265720 is an apocalyptic number.

223265720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

223265720 is an abundant number, since it is smaller than the sum of its proper divisors (295289800).

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

223265720 is a wasteful number, since it uses less digits than its factorization.

223265720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180095 (or 180091 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 29.

The square root of 223265720 is about 14942.0788379663. The cubic root of 223265720 is about 606.6534648068.

The spelling of 223265720 in words is "two hundred twenty-three million, two hundred sixty-five thousand, seven hundred twenty".