871432 has 8 divisors (see below), whose sum is σ = 1633950. Its totient is φ = 435712.

The previous prime is 871393. The next prime is 871439. The reversal of 871432 is 234178.

It can be written as a sum of positive squares in only one way, i.e., 784996 + 86436 = 886^2 + 294^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 871397 and 871406.

It is not an unprimeable number, because it can be changed into a prime (871439) by changing a digit.

871432 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54457 + ... + 54472.

2⁸⁷¹⁴³² is an apocalyptic number.

It is an amenable number.

871432 is a deficient number, since it is larger than the sum of its proper divisors (762518).

871432 is a wasteful number, since it uses less digits than its factorization.

871432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108935 (or 108931 counting only the distinct ones).

The product of its digits is 1344, while the sum is 25.

The square root of 871432 is about 933.5052222671. The cubic root of 871432 is about 95.5163755806.

The spelling of 871432 in words is "eight hundred seventy-one thousand, four hundred thirty-two".