71911248 has 80 divisors (see below), whose sum is σ = 197665920. Its totient is φ = 22477312.

The previous prime is 71911243. The next prime is 71911261. The reversal of 71911248 is 84211917.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71911243) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57898 + ... + 59126.

It is an arithmetic number, because the mean of its divisors is an integer number (2470824).

Almost surely, 2^71911248 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 71911248, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (98832960).

71911248 is an abundant number, since it is smaller than the sum of its proper divisors (125754672).

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

71911248 is a wasteful number, since it uses less digits than its factorization.

71911248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1316 (or 1310 counting only the distinct ones).

The product of its digits is 4032, while the sum is 33.

The square root of 71911248 is about 8480.0499998526. The cubic root of 71911248 is about 415.8457576601.

The spelling of 71911248 in words is "seventy-one million, nine hundred eleven thousand, two hundred forty-eight".