226727721 has 32 divisors (see below), whose sum is σ = 382371840. Its totient is φ = 131432400.

The previous prime is 226727719. The next prime is 226727731. The reversal of 226727721 is 127727622.

226727721 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 226727721 - 2¹ = 226727719 is a prime.

It is not an unprimeable number, because it can be changed into a prime (226727701) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9765 + ... + 23426.

It is an arithmetic number, because the mean of its divisors is an integer number (11949120).

Almost surely, 2^226727721 is an apocalyptic number.

It is an amenable number.

226727721 is a deficient number, since it is larger than the sum of its proper divisors (155644119).

226727721 is a wasteful number, since it uses less digits than its factorization.

226727721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33234 (or 33228 counting only the distinct ones).

The product of its digits is 32928, while the sum is 36.

The square root of 226727721 is about 15057.4805661505. The cubic root of 226727721 is about 609.7730240380.

Subtracting from 226727721 its reverse (127727622), we obtain a palindrome (99000099).

The spelling of 226727721 in words is "two hundred twenty-six million, seven hundred twenty-seven thousand, seven hundred twenty-one".