2271447378 has 72 divisors (see below), whose sum is σ = 5247069516. Its totient is φ = 709992000.

The previous prime is 2271447377. The next prime is 2271447379. The reversal of 2271447378 is 8737441722.

2271447378 is a `hidden beast` number, since 2 + 271 + 4 + 4 + 7 + 378 = 666.

It is an interprime number because it is at equal distance from previous prime (2271447377) and next prime (2271447379).

It can be written as a sum of positive squares in 2 ways, for example, as 2232846009 + 38601369 = 47253^2 + 6213^2 .

It is not an unprimeable number, because it can be changed into a prime (2271447377) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 654568 + ... + 658028.

Almost surely, 2^2271447378 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2271447378, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2623534758).

2271447378 is an abundant number, since it is smaller than the sum of its proper divisors (2975622138).

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

2271447378 is a wasteful number, since it uses less digits than its factorization.

2271447378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3608 (or 3586 counting only the distinct ones).

The product of its digits is 526848, while the sum is 45.

The square root of 2271447378 is about 47659.7039227060. The cubic root of 2271447378 is about 1314.5210953511.

The spelling of 2271447378 in words is "two billion, two hundred seventy-one million, four hundred forty-seven thousand, three hundred seventy-eight".