71247888 has 60 divisors (see below), whose sum is σ = 201951360. Its totient is φ = 23444928.

The previous prime is 71247871. The next prime is 71247899. The reversal of 71247888 is 88874217.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8245 + ... + 14507.

It is an arithmetic number, because the mean of its divisors is an integer number (3365856).

Almost surely, 2^71247888 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 71247888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (100975680).

71247888 is an abundant number, since it is smaller than the sum of its proper divisors (130703472).

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

71247888 is a wasteful number, since it uses less digits than its factorization.

71247888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6356 (or 6347 counting only the distinct ones).

The product of its digits is 200704, while the sum is 45.

The square root of 71247888 is about 8440.8464030570. The cubic root of 71247888 is about 414.5631208370.

The spelling of 71247888 in words is "seventy-one million, two hundred forty-seven thousand, eight hundred eighty-eight".