71096640 has 112 divisors (see below), whose sum is σ = 233111040. Its totient is φ = 18339840.

The previous prime is 71096639. The next prime is 71096699. The reversal of 71096640 is 4669017.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28566 + ... + 30954.

Almost surely, 2^71096640 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 71096640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (116555520).

71096640 is an abundant number, since it is smaller than the sum of its proper divisors (162014400).

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

71096640 is a wasteful number, since it uses less digits than its factorization.

71096640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2440 (or 2430 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 33.

The square root of 71096640 is about 8431.8823521204. The cubic root of 71096640 is about 414.2695623622.

The spelling of 71096640 in words is "seventy-one million, ninety-six thousand, six hundred forty".