71030380 has 24 divisors (see below), whose sum is σ = 153196848. Its totient is φ = 27643968.

The previous prime is 71030363. The next prime is 71030381. The reversal of 71030380 is 8303017.

It is not an unprimeable number, because it can be changed into a prime (71030381) 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, 47254 + ... + 48733.

It is an arithmetic number, because the mean of its divisors is an integer number (6383202).

Almost surely, 2^71030380 is an apocalyptic number.

It is an amenable number.

71030380 is an abundant number, since it is smaller than the sum of its proper divisors (82166468).

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

71030380 is a wasteful number, since it uses less digits than its factorization.

71030380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96033 (or 96031 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 22.

The square root of 71030380 is about 8427.9523017160. The cubic root of 71030380 is about 414.1408266348.

Adding to 71030380 its reverse (8303017), we get a palindrome (79333397).

The spelling of 71030380 in words is "seventy-one million, thirty thousand, three hundred eighty".