871491472 has 10 divisors (see below), whose sum is σ = 1688514758. Its totient is φ = 435745728.

The previous prime is 871491463. The next prime is 871491493. The reversal of 871491472 is 274194178.

It can be written as a sum of positive squares in only one way, i.e., 506070016 + 365421456 = 22496^2 + 19116^2 .

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 as a sum of consecutive naturals, namely, 27234093 + ... + 27234124.

Almost surely, 2^871491472 is an apocalyptic number.

It is an amenable number.

871491472 is a deficient number, since it is larger than the sum of its proper divisors (817023286).

871491472 is a wasteful number, since it uses less digits than its factorization.

871491472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54468225 (or 54468219 counting only the distinct ones).

The product of its digits is 112896, while the sum is 43.

The square root of 871491472 is about 29521.0343992212. The cubic root of 871491472 is about 955.1854841059.

The spelling of 871491472 in words is "eight hundred seventy-one million, four hundred ninety-one thousand, four hundred seventy-two".