226405405 has 32 divisors (see below), whose sum is σ = 297769824. Its totient is φ = 164560896.

The previous prime is 226405379. The next prime is 226405423. The reversal of 226405405 is 504504622.

It can be written as a sum of positive squares in 16 ways, for example, as 9108324 + 217297081 = 3018^2 + 14741^2 .

It is a cyclic number.

It is not a de Polignac number, because 226405405 - 2¹¹ = 226403357 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 606799 + ... + 607171.

It is an arithmetic number, because the mean of its divisors is an integer number (9305307).

Almost surely, 2^226405405 is an apocalyptic number.

It is an amenable number.

226405405 is a deficient number, since it is larger than the sum of its proper divisors (71364419).

226405405 is a wasteful number, since it uses less digits than its factorization.

226405405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 625.

The product of its (nonzero) digits is 9600, while the sum is 28.

The square root of 226405405 is about 15046.7739067217. The cubic root of 226405405 is about 609.4839360101.

The spelling of 226405405 in words is "two hundred twenty-six million, four hundred five thousand, four hundred five".