223220538 has 12 divisors (see below), whose sum is σ = 483644538. Its totient is φ = 74406840.

The previous prime is 223220537. The next prime is 223220549. The reversal of 223220538 is 835022322.

223220538 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 214417449 + 8803089 = 14643^2 + 2967^2 .

It is a super-3 number, since 3×223220538³ (a number of 26 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (223220537) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6200553 + ... + 6200588.

Almost surely, 2^223220538 is an apocalyptic number.

223220538 is an abundant number, since it is smaller than the sum of its proper divisors (260424000).

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

223220538 is a wasteful number, since it uses less digits than its factorization.

223220538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12401149 (or 12401146 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 223220538 is about 14940.5668567160. The cubic root of 223220538 is about 606.6125394825.

The spelling of 223220538 in words is "two hundred twenty-three million, two hundred twenty thousand, five hundred thirty-eight".