220497226 has 4 divisors (see below), whose sum is σ = 330745842. Its totient is φ = 110248612.

The previous prime is 220497181. The next prime is 220497227. The reversal of 220497226 is 622794022.

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

It can be written as a sum of positive squares in only one way, i.e., 220374025 + 123201 = 14845^2 + 351^2 .

It is a junction number, because it is equal to n+sod(n) for n = 220497191 and 220497200.

It is not an unprimeable number, because it can be changed into a prime (220497227) by changing a digit.

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 as a sum of consecutive naturals, namely, 55124305 + ... + 55124308.

Almost surely, 2^220497226 is an apocalyptic number.

220497226 is a deficient number, since it is larger than the sum of its proper divisors (110248616).

220497226 is a wasteful number, since it uses less digits than its factorization.

220497226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110248615.

The product of its (nonzero) digits is 24192, while the sum is 34.

The square root of 220497226 is about 14849.1489991851. The cubic root of 220497226 is about 604.1355283347.

The spelling of 220497226 in words is "two hundred twenty million, four hundred ninety-seven thousand, two hundred twenty-six".