71871834 has 32 divisors (see below), whose sum is σ = 151081920. Its totient is φ = 22764672.

The previous prime is 71871829. The next prime is 71871881. The reversal of 71871834 is 43817817.

It is a junction number, because it is equal to n+sod(n) for n = 71871792 and 71871801.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5782 + ... + 13310.

It is an arithmetic number, because the mean of its divisors is an integer number (4721310).

Almost surely, 2^71871834 is an apocalyptic number.

71871834 is a gapful number since it is divisible by the number (74) formed by its first and last digit.

71871834 is an abundant number, since it is smaller than the sum of its proper divisors (79210086).

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

71871834 is a wasteful number, since it uses less digits than its factorization.

71871834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7614.

The product of its digits is 37632, while the sum is 39.

The square root of 71871834 is about 8477.7257563571. The cubic root of 71871834 is about 415.7697698256.

The spelling of 71871834 in words is "seventy-one million, eight hundred seventy-one thousand, eight hundred thirty-four".