226665012 has 72 divisors (see below), whose sum is σ = 642155584. Its totient is φ = 60945408.

The previous prime is 226664989. The next prime is 226665031. The reversal of 226665012 is 210566622.

It is a congruent number.

It is an unprimeable number.

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 in 23 ways as a sum of consecutive naturals, for example, 19608 + ... + 28944.

Almost surely, 2^226665012 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 226665012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (321077792).

226665012 is an abundant number, since it is smaller than the sum of its proper divisors (415490572).

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

226665012 is a wasteful number, since it uses less digits than its factorization.

226665012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9385 (or 9366 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 226665012 is about 15055.3981016777. The cubic root of 226665012 is about 609.7168012666.

The spelling of 226665012 in words is "two hundred twenty-six million, six hundred sixty-five thousand, twelve".