71671432 has 16 divisors (see below), whose sum is σ = 153581760. Its totient is φ = 30716304.

The previous prime is 71671429. The next prime is 71671451. The reversal of 71671432 is 23417617.

It is a junction number, because it is equal to n+sod(n) for n = 71671394 and 71671403.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 639868 + ... + 639979.

It is an arithmetic number, because the mean of its divisors is an integer number (9598860).

Almost surely, 2^71671432 is an apocalyptic number.

It is an amenable number.

71671432 is an abundant number, since it is smaller than the sum of its proper divisors (81910328).

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

71671432 is a wasteful number, since it uses less digits than its factorization.

71671432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1279860 (or 1279856 counting only the distinct ones).

The product of its digits is 7056, while the sum is 31.

The square root of 71671432 is about 8465.8981803468. The cubic root of 71671432 is about 415.3829764136.

The spelling of 71671432 in words is "seventy-one million, six hundred seventy-one thousand, four hundred thirty-two".