226888621 has 4 divisors (see below), whose sum is σ = 227268000. Its totient is φ = 226509244.

The previous prime is 226888591. The next prime is 226888631. The reversal of 226888621 is 126888622.

226888621 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 226888621 - 2⁵ = 226888589 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (226888631) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 188791 + ... + 189988.

It is an arithmetic number, because the mean of its divisors is an integer number (56817000).

Almost surely, 2^226888621 is an apocalyptic number.

It is an amenable number.

226888621 is a deficient number, since it is larger than the sum of its proper divisors (379379).

226888621 is an equidigital number, since it uses as much as digits as its factorization.

226888621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 379378.

The product of its digits is 147456, while the sum is 43.

The square root of 226888621 is about 15062.8224778758. The cubic root of 226888621 is about 609.9172341348.

Subtracting from 226888621 its reverse (126888622), we obtain a palindrome (99999999).

The spelling of 226888621 in words is "two hundred twenty-six million, eight hundred eighty-eight thousand, six hundred twenty-one".