226220220 has 72 divisors (see below), whose sum is σ = 704768064. Its totient is φ = 58693248.

The previous prime is 226220191. The next prime is 226220221. The reversal of 226220220 is 22022622.

226220220 is a `hidden beast` number, since 22 + 622 + 0 + 2 + 20 = 666.

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 = 226220193 and 226220202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (226220221) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10324 + ... + 23643.

Almost surely, 2^226220220 is an apocalyptic number.

226220220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

226220220 is an abundant number, since it is smaller than the sum of its proper divisors (478547844).

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

226220220 is a wasteful number, since it uses less digits than its factorization.

226220220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34019 (or 34014 counting only the distinct ones).

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

The square root of 226220220 is about 15040.6190032192. The cubic root of 226220220 is about 609.3177178503.

Adding to 226220220 its reverse (22022622), we get a palindrome (248242842).

The spelling of 226220220 in words is "two hundred twenty-six million, two hundred twenty thousand, two hundred twenty".