1227732216 has 64 divisors (see below), whose sum is σ = 3176236800. Its totient is φ = 395205888.

The previous prime is 1227732199. The next prime is 1227732223. The reversal of 1227732216 is 6122377221.

1227732216 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

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, 85165 + ... + 98531.

It is an arithmetic number, because the mean of its divisors is an integer number (49628700).

Almost surely, 2^1227732216 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1227732216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1588118400).

1227732216 is an abundant number, since it is smaller than the sum of its proper divisors (1948504584).

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

1227732216 is a wasteful number, since it uses less digits than its factorization.

1227732216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13508 (or 13504 counting only the distinct ones).

The product of its digits is 14112, while the sum is 33.

The square root of 1227732216 is about 35039.0099175191. The cubic root of 1227732216 is about 1070.7823829173.

The spelling of 1227732216 in words is "one billion, two hundred twenty-seven million, seven hundred thirty-two thousand, two hundred sixteen".