71831376 has 120 divisors (see below), whose sum is σ = 211236480. Its totient is φ = 22756608.

The previous prime is 71831317. The next prime is 71831387. The reversal of 71831376 is 67313817.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 71831376.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 430045 + ... + 430211.

It is an arithmetic number, because the mean of its divisors is an integer number (1760304).

Almost surely, 2^71831376 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 71831376, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (105618240).

71831376 is an abundant number, since it is smaller than the sum of its proper divisors (139405104).

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

71831376 is a wasteful number, since it uses less digits than its factorization.

71831376 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 313 (or 304 counting only the distinct ones).

The product of its digits is 21168, while the sum is 36.

The square root of 71831376 is about 8475.3392852440. The cubic root of 71831376 is about 415.6917403216.

The spelling of 71831376 in words is "seventy-one million, eight hundred thirty-one thousand, three hundred seventy-six".