226388556 has 18 divisors (see below), whose sum is σ = 572260052. Its totient is φ = 75462840.

The previous prime is 226388551. The next prime is 226388557. The reversal of 226388556 is 655883622.

226388556 is a `hidden beast` number, since 2 + 2 + 638 + 8 + 5 + 5 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is not an unprimeable number, because it can be changed into a prime (226388551) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3144250 + ... + 3144321.

Almost surely, 2^226388556 is an apocalyptic number.

It is an amenable number.

226388556 is an abundant number, since it is smaller than the sum of its proper divisors (345871496).

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

226388556 is a wasteful number, since it uses less digits than its factorization.

226388556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6288581 (or 6288576 counting only the distinct ones).

The product of its digits is 691200, while the sum is 45.

The square root of 226388556 is about 15046.2140088462. The cubic root of 226388556 is about 609.4688164512.

The spelling of 226388556 in words is "two hundred twenty-six million, three hundred eighty-eight thousand, five hundred fifty-six".