226621556 has 12 divisors (see below), whose sum is σ = 453243168. Its totient is φ = 97123512.

The previous prime is 226621529. The next prime is 226621579. The reversal of 226621556 is 655126622.

226621556 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

226621556 is an admirable number.

It is a super-2 number, since 2×226621556² = 102714659287722272, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4046786 + ... + 4046841.

It is an arithmetic number, because the mean of its divisors is an integer number (37770264).

Almost surely, 2^226621556 is an apocalyptic number.

It is an amenable number.

226621556 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

226621556 is a wasteful number, since it uses less digits than its factorization.

226621556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8093638 (or 8093636 counting only the distinct ones).

The product of its digits is 43200, while the sum is 35.

The square root of 226621556 is about 15053.9548292135. The cubic root of 226621556 is about 609.6778340016.

The spelling of 226621556 in words is "two hundred twenty-six million, six hundred twenty-one thousand, five hundred fifty-six".