226972818 has 54 divisors (see below), whose sum is σ = 508820949. Its totient is φ = 73122192.

The previous prime is 226972813. The next prime is 226972819. The reversal of 226972818 is 818279622.

It can be written as a sum of positive squares in 2 ways, for example, as 215296929 + 11675889 = 14673^2 + 3417^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=10653.

It is a super-2 number, since 2×226972818² = 103033320221722248, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (226972813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 3387621 + ... + 3387687.

Almost surely, 2^226972818 is an apocalyptic number.

226972818 is an abundant number, since it is smaller than the sum of its proper divisors (281848131).

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

226972818 is an equidigital number, since it uses as much as digits as its factorization.

226972818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248 (or 125 counting only the distinct ones).

The product of its digits is 193536, while the sum is 45.

The square root of 226972818 is about 15065.6170799606. The cubic root of 226972818 is about 609.9926703410.

The spelling of 226972818 in words is "two hundred twenty-six million, nine hundred seventy-two thousand, eight hundred eighteen".