71347872 has 48 divisors (see below), whose sum is σ = 191866752. Its totient is φ = 23201280.

The previous prime is 71347853. The next prime is 71347873. The reversal of 71347872 is 27874317.

It is a tau number, because it is divible by the number of its divisors (48).

It is a self number, because there is not a number n which added to its sum of digits gives 71347872.

It is not an unprimeable number, because it can be changed into a prime (71347873) 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, 5128 + ... + 12999.

It is an arithmetic number, because the mean of its divisors is an integer number (3997224).

Almost surely, 2^71347872 is an apocalyptic number.

It is an amenable number.

71347872 is an abundant number, since it is smaller than the sum of its proper divisors (120518880).

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

71347872 is a wasteful number, since it uses less digits than its factorization.

71347872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18181 (or 18173 counting only the distinct ones).

The product of its digits is 65856, while the sum is 39.

The square root of 71347872 is about 8446.7669554688. The cubic root of 71347872 is about 414.7569525711.

The spelling of 71347872 in words is "seventy-one million, three hundred forty-seven thousand, eight hundred seventy-two".