223772746 has 4 divisors (see below), whose sum is σ = 335659122. Its totient is φ = 111886372.

The previous prime is 223772743. The next prime is 223772767. The reversal of 223772746 is 647277322.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 197711721 + 26061025 = 14061^2 + 5105^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 223772699 and 223772708.

It is not an unprimeable number, because it can be changed into a prime (223772743) by changing a digit.

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 as a sum of consecutive naturals, namely, 55943185 + ... + 55943188.

Almost surely, 2^223772746 is an apocalyptic number.

223772746 is a deficient number, since it is larger than the sum of its proper divisors (111886376).

223772746 is a wasteful number, since it uses less digits than its factorization.

223772746 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111886375.

The product of its digits is 197568, while the sum is 40.

The square root of 223772746 is about 14959.0355972569. The cubic root of 223772746 is about 607.1123448248.

The spelling of 223772746 in words is "two hundred twenty-three million, seven hundred seventy-two thousand, seven hundred forty-six".