71130870 has 48 divisors (see below), whose sum is σ = 194678640. Its totient is φ = 17969472.

The previous prime is 71130869. The next prime is 71130877. The reversal of 71130870 is 7803117.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71130877) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19089 + ... + 22508.

It is an arithmetic number, because the mean of its divisors is an integer number (4055805).

Almost surely, 2^71130870 is an apocalyptic number.

71130870 is an abundant number, since it is smaller than the sum of its proper divisors (123547770).

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

71130870 is a wasteful number, since it uses less digits than its factorization.

71130870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41629 (or 41626 counting only the distinct ones).

The product of its (nonzero) digits is 1176, while the sum is 27.

The square root of 71130870 is about 8433.9119037372. The cubic root of 71130870 is about 414.3360360707.

Adding to 71130870 its reverse (7803117), we get a palindrome (78933987).

The spelling of 71130870 in words is "seventy-one million, one hundred thirty thousand, eight hundred seventy".