71308224 has 168 divisors, whose sum is σ = 224668080. Its totient is φ = 21491712.

The previous prime is 71308219. The next prime is 71308229. The reversal of 71308224 is 42280317.

It is an interprime number because it is at equal distance from previous prime (71308219) and next prime (71308229).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71308229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 666379 + ... + 666485.

It is an arithmetic number, because the mean of its divisors is an integer number (1337310).

Almost surely, 2^71308224 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 71308224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (112334040).

71308224 is an abundant number, since it is smaller than the sum of its proper divisors (153359856).

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

71308224 is a wasteful number, since it uses less digits than its factorization.

71308224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227 (or 214 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 71308224 is about 8444.4196958702. The cubic root of 71308224 is about 414.6801115471.

The spelling of 71308224 in words is "seventy-one million, three hundred eight thousand, two hundred twenty-four".