2271801228 has 48 divisors (see below), whose sum is σ = 5349087744. Its totient is φ = 750409920.

The previous prime is 2271801199. The next prime is 2271801247. The reversal of 2271801228 is 8221081722.

It is a super-2 number, since 2×2271801228² = 10322161639084615968, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 665101 + ... + 668507.

It is an arithmetic number, because the mean of its divisors is an integer number (111439328).

Almost surely, 2^2271801228 is an apocalyptic number.

It is an amenable number.

2271801228 is an abundant number, since it is smaller than the sum of its proper divisors (3077286516).

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

2271801228 is a wasteful number, since it uses less digits than its factorization.

2271801228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3902 (or 3900 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 33.

The square root of 2271801228 is about 47663.4160336835. The cubic root of 2271801228 is about 1314.5893512632.

The spelling of 2271801228 in words is "two billion, two hundred seventy-one million, eight hundred one thousand, two hundred twenty-eight".