220004226 has 24 divisors (see below), whose sum is σ = 513343740. Its totient is φ = 67693536.

The previous prime is 220004209. The next prime is 220004243. The reversal of 220004226 is 622400022.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (220004209) and next prime (220004243).

It can be written as a sum of positive squares in 2 ways, for example, as 189035001 + 30969225 = 13749^2 + 5565^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 220004199 and 220004208.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 469861 + ... + 470328.

Almost surely, 2^220004226 is an apocalyptic number.

220004226 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

220004226 is an abundant number, since it is smaller than the sum of its proper divisors (293339514).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

220004226 is a wasteful number, since it uses less digits than its factorization.

220004226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 940210 (or 940207 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 220004226 is about 14832.5394319381. The cubic root of 220004226 is about 603.6849390432.

Adding to 220004226 its reverse (622400022), we get a palindrome (842404248).

The spelling of 220004226 in words is "two hundred twenty million, four thousand, two hundred twenty-six".