71316720 has 160 divisors (see below), whose sum is σ = 248466240. Its totient is φ = 18800640.

The previous prime is 71316703. The next prime is 71316727. The reversal of 71316720 is 2761317.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71316727) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 295800 + ... + 296040.

It is an arithmetic number, because the mean of its divisors is an integer number (1552914).

Almost surely, 2^71316720 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 71316720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (124233120).

71316720 is an abundant number, since it is smaller than the sum of its proper divisors (177149520).

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

71316720 is a wasteful number, since it uses less digits than its factorization.

71316720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 400 (or 388 counting only the distinct ones).

The product of its (nonzero) digits is 1764, while the sum is 27.

The square root of 71316720 is about 8444.9227349929. The cubic root of 71316720 is about 414.6965798781.

The spelling of 71316720 in words is "seventy-one million, three hundred sixteen thousand, seven hundred twenty".