226630405 has 4 divisors (see below), whose sum is σ = 271956492. Its totient is φ = 181304320.

The previous prime is 226630399. The next prime is 226630441. The reversal of 226630405 is 504036622.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 32251041 + 194379364 = 5679^2 + 13942^2 .

It is not a de Polignac number, because 226630405 - 2⁷ = 226630277 is a prime.

It is a super-2 number, since 2×226630405² = 102722680940928050, which contains 22 as substring.

It is a Duffinian number.

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 3 ways as a sum of consecutive naturals, for example, 22663036 + ... + 22663045.

It is an arithmetic number, because the mean of its divisors is an integer number (67989123).

Almost surely, 2^226630405 is an apocalyptic number.

It is an amenable number.

226630405 is a deficient number, since it is larger than the sum of its proper divisors (45326087).

226630405 is an equidigital number, since it uses as much as digits as its factorization.

226630405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45326086.

The product of its (nonzero) digits is 8640, while the sum is 28.

The square root of 226630405 is about 15054.2487358221. The cubic root of 226630405 is about 609.6857693588.

The spelling of 226630405 in words is "two hundred twenty-six million, six hundred thirty thousand, four hundred five".