71308472 has 48 divisors (see below), whose sum is σ = 145877760. Its totient is φ = 32564736.

The previous prime is 71308469. The next prime is 71308507. The reversal of 71308472 is 27480317.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 185993 + ... + 186375.

It is an arithmetic number, because the mean of its divisors is an integer number (3039120).

Almost surely, 2^71308472 is an apocalyptic number.

It is an amenable number.

71308472 is an abundant number, since it is smaller than the sum of its proper divisors (74569288).

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

71308472 is a wasteful number, since it uses less digits than its factorization.

71308472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 480 (or 439 counting only the distinct ones).

The product of its (nonzero) digits is 9408, while the sum is 32.

The square root of 71308472 is about 8444.4343801110. The cubic root of 71308472 is about 414.6805922796.

Adding to 71308472 its reverse (27480317), we get a palindrome (98788789).

The spelling of 71308472 in words is "seventy-one million, three hundred eight thousand, four hundred seventy-two".