227211816 has 64 divisors (see below), whose sum is σ = 613166400. Its totient is φ = 69746688.

The previous prime is 227211797. The next prime is 227211827. The reversal of 227211816 is 618112722.

227211816 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 239455 + ... + 240401.

It is an arithmetic number, because the mean of its divisors is an integer number (9580725).

Almost surely, 2^227211816 is an apocalyptic number.

227211816 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 227211816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (306583200).

227211816 is an abundant number, since it is smaller than the sum of its proper divisors (385954584).

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

227211816 is a wasteful number, since it uses less digits than its factorization.

227211816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1738 (or 1734 counting only the distinct ones).

The product of its digits is 2688, while the sum is 30.

The square root of 227211816 is about 15073.5468951405. The cubic root of 227211816 is about 610.2066987419.

The spelling of 227211816 in words is "two hundred twenty-seven million, two hundred eleven thousand, eight hundred sixteen".