226720445 has 16 divisors (see below), whose sum is σ = 327296640. Its totient is φ = 147282624.

The previous prime is 226720427. The next prime is 226720471. The reversal of 226720445 is 544027622.

It is a cyclic number.

It is not a de Polignac number, because 226720445 - 2⁸ = 226720189 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 15 ways as a sum of consecutive naturals, for example, 169802 + ... + 171131.

It is an arithmetic number, because the mean of its divisors is an integer number (20456040).

Almost surely, 2^226720445 is an apocalyptic number.

It is an amenable number.

226720445 is a deficient number, since it is larger than the sum of its proper divisors (100576195).

226720445 is a wasteful number, since it uses less digits than its factorization.

226720445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 340964.

The product of its (nonzero) digits is 26880, while the sum is 32.

The square root of 226720445 is about 15057.2389567278. The cubic root of 226720445 is about 609.7665011538.

The spelling of 226720445 in words is "two hundred twenty-six million, seven hundred twenty thousand, four hundred forty-five".