71117130 has 96 divisors (see below), whose sum is σ = 200931840. Its totient is φ = 16060800.

The previous prime is 71117129. The next prime is 71117177. The reversal of 71117130 is 3171117.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 71117097 and 71117106.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 148231 + ... + 148709.

It is an arithmetic number, because the mean of its divisors is an integer number (2093040).

Almost surely, 2^71117130 is an apocalyptic number.

71117130 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 71117130, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (100465920).

71117130 is an abundant number, since it is smaller than the sum of its proper divisors (129814710).

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

71117130 is a wasteful number, since it uses less digits than its factorization.

71117130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 604 (or 597 counting only the distinct ones).

The product of its (nonzero) digits is 147, while the sum is 21.

The square root of 71117130 is about 8433.0972957745. The cubic root of 71117130 is about 414.3093559353.

Adding to 71117130 its reverse (3171117), we get a palindrome (74288247).

It can be divided in two parts, 7111 and 7130, that added together give a palindrome (14241).

The spelling of 71117130 in words is "seventy-one million, one hundred seventeen thousand, one hundred thirty".