71471808 has 140 divisors (see below), whose sum is σ = 224604072. Its totient is φ = 22394880.

The previous prime is 71471801. The next prime is 71471839. The reversal of 71471808 is 80817417.

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

It is not an unprimeable number, because it can be changed into a prime (71471801) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 87723 + ... + 88533.

Almost surely, 2^71471808 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 71471808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (112302036).

71471808 is an abundant number, since it is smaller than the sum of its proper divisors (153132264).

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

71471808 is a wasteful number, since it uses less digits than its factorization.

71471808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 852 (or 833 counting only the distinct ones).

The product of its (nonzero) digits is 12544, while the sum is 36.

The square root of 71471808 is about 8454.1000703801. The cubic root of 71471808 is about 414.9969671235.

The spelling of 71471808 in words is "seventy-one million, four hundred seventy-one thousand, eight hundred eight".