71180130 has 64 divisors (see below), whose sum is σ = 198190080. Its totient is φ = 16023744.

The previous prime is 71180117. The next prime is 71180171. The reversal of 71180130 is 3108117.

It is a super-2 number, since 2×71180130² = 10133221813633800, which contains 22 as substring.

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 = 71180097 and 71180106.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11541 + ... + 16599.

It is an arithmetic number, because the mean of its divisors is an integer number (3096720).

Almost surely, 2^71180130 is an apocalyptic number.

71180130 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 71180130, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (99095040).

71180130 is an abundant number, since it is smaller than the sum of its proper divisors (127009950).

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

71180130 is a wasteful number, since it uses less digits than its factorization.

71180130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5143.

The product of its (nonzero) digits is 168, while the sum is 21.

The square root of 71180130 is about 8436.8317513152. The cubic root of 71180130 is about 414.4316602041.

Adding to 71180130 its reverse (3108117), we get a palindrome (74288247).

The spelling of 71180130 in words is "seventy-one million, one hundred eighty thousand, one hundred thirty".