71008320 has 224 divisors, whose sum is σ = 252374400. Its totient is φ = 16809984.

The previous prime is 71008319. The next prime is 71008363. The reversal of 71008320 is 2380017.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 309966 + ... + 310194.

Almost surely, 2^71008320 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 71008320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (126187200).

71008320 is an abundant number, since it is smaller than the sum of its proper divisors (181366080).

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

71008320 is a wasteful number, since it uses less digits than its factorization.

71008320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285 (or 275 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 21.

The square root of 71008320 is about 8426.6434598837. The cubic root of 71008320 is about 414.0979487724.

Adding to 71008320 its reverse (2380017), we get a palindrome (73388337).

The spelling of 71008320 in words is "seventy-one million, eight thousand, three hundred twenty".