71380716 has 72 divisors (see below), whose sum is σ = 188470464. Its totient is φ = 20852160.

The previous prime is 71380709. The next prime is 71380717. The reversal of 71380716 is 61708317.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (71380717) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 110691 + ... + 111333.

Almost surely, 2^71380716 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 71380716, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (94235232).

71380716 is an abundant number, since it is smaller than the sum of its proper divisors (117089748).

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

71380716 is a wasteful number, since it uses less digits than its factorization.

71380716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 719 (or 688 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 33.

The square root of 71380716 is about 8448.7109075882. The cubic root of 71380716 is about 414.8205853384.

The spelling of 71380716 in words is "seventy-one million, three hundred eighty thousand, seven hundred sixteen".