2271138472 has 8 divisors (see below), whose sum is σ = 4258384650. Its totient is φ = 1135569232.

The previous prime is 2271138449. The next prime is 2271138479. The reversal of 2271138472 is 2748311722.

2271138472 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 2024460036 + 246678436 = 44994^2 + 15706^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (2271138479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 141946147 + ... + 141946162.

Almost surely, 2^2271138472 is an apocalyptic number.

It is an amenable number.

2271138472 is a deficient number, since it is larger than the sum of its proper divisors (1987246178).

2271138472 is a wasteful number, since it uses less digits than its factorization.

2271138472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 283892315 (or 283892311 counting only the distinct ones).

The product of its digits is 37632, while the sum is 37.

The square root of 2271138472 is about 47656.4630664089. The cubic root of 2271138472 is about 1314.4615031183.

The spelling of 2271138472 in words is "two billion, two hundred seventy-one million, one hundred thirty-eight thousand, four hundred seventy-two".