71021308 has 24 divisors (see below), whose sum is σ = 131915952. Its totient is φ = 33341184.

The previous prime is 71021303. The next prime is 71021333. The reversal of 71021308 is 80312017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71021303) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34566 + ... + 36562.

It is an arithmetic number, because the mean of its divisors is an integer number (5496498).

Almost surely, 2^71021308 is an apocalyptic number.

It is an amenable number.

71021308 is a deficient number, since it is larger than the sum of its proper divisors (60894644).

71021308 is a wasteful number, since it uses less digits than its factorization.

71021308 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2541 (or 2539 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 22.

The square root of 71021308 is about 8427.4140755038. The cubic root of 71021308 is about 414.1231945289.

The spelling of 71021308 in words is "seventy-one million, twenty-one thousand, three hundred eight".