226284921 has 20 divisors (see below), whose sum is σ = 338825652. Its totient is φ = 150501888.

The previous prime is 226284907. The next prime is 226284967. The reversal of 226284921 is 129482622.

226284921 is a `hidden beast` number, since 2 + 2 + 628 + 4 + 9 + 21 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 163558521 + 62726400 = 12789^2 + 7920^2 .

It is not a de Polignac number, because 226284921 - 2⁶ = 226284857 is a prime.

It is not an unprimeable number, because it can be changed into a prime (226285921) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 33961 + ... + 40073.

Almost surely, 2^226284921 is an apocalyptic number.

It is an amenable number.

226284921 is a deficient number, since it is larger than the sum of its proper divisors (112540731).

226284921 is an equidigital number, since it uses as much as digits as its factorization.

226284921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6582 (or 6573 counting only the distinct ones).

The product of its digits is 27648, while the sum is 36.

The square root of 226284921 is about 15042.7697250207. The cubic root of 226284921 is about 609.3758024131.

The spelling of 226284921 in words is "two hundred twenty-six million, two hundred eighty-four thousand, nine hundred twenty-one".