71030480 has 40 divisors (see below), whose sum is σ = 167251200. Its totient is φ = 28050048.

The previous prime is 71030473. The next prime is 71030497. The reversal of 71030480 is 8403017.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 701 + ... + 11939.

It is an arithmetic number, because the mean of its divisors is an integer number (4181280).

Almost surely, 2^71030480 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 71030480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83625600).

71030480 is an abundant number, since it is smaller than the sum of its proper divisors (96220720).

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

71030480 is a wasteful number, since it uses less digits than its factorization.

71030480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11331 (or 11325 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 71030480 is about 8427.9582343531. The cubic root of 71030480 is about 414.1410209838.

Adding to 71030480 its reverse (8403017), we get a palindrome (79433497).

The spelling of 71030480 in words is "seventy-one million, thirty thousand, four hundred eighty".