71534320 has 160 divisors (see below), whose sum is σ = 201862080. Its totient is φ = 23362560.

The previous prime is 71534303. The next prime is 71534321. The reversal of 71534320 is 2343517.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71534321) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 1933342 + ... + 1933378.

It is an arithmetic number, because the mean of its divisors is an integer number (1261638).

Almost surely, 2^71534320 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 71534320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (100931040).

71534320 is an abundant number, since it is smaller than the sum of its proper divisors (130327760).

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

71534320 is a wasteful number, since it uses less digits than its factorization.

71534320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100 (or 68 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 25.

The square root of 71534320 is about 8457.7964033192. The cubic root of 71534320 is about 415.1179226510.

Adding to 71534320 its reverse (2343517), we get a palindrome (73877837).

The spelling of 71534320 in words is "seventy-one million, five hundred thirty-four thousand, three hundred twenty".