71013930 has 64 divisors (see below), whose sum is σ = 194358528. Its totient is φ = 16450560.

The previous prime is 71013923. The next prime is 71013931. The reversal of 71013930 is 3931017.

It is a self number, because there is not a number n which added to its sum of digits gives 71013930.

It is not an unprimeable number, because it can be changed into a prime (71013931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1275 + ... + 11985.

It is an arithmetic number, because the mean of its divisors is an integer number (3036852).

Almost surely, 2^71013930 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 71013930, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97179264).

71013930 is an abundant number, since it is smaller than the sum of its proper divisors (123344598).

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

71013930 is a wasteful number, since it uses less digits than its factorization.

71013930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10751.

The product of its (nonzero) digits is 567, while the sum is 24.

The square root of 71013930 is about 8426.9763260614. The cubic root of 71013930 is about 414.1088537307.

Adding to 71013930 its reverse (3931017), we get a palindrome (74944947).

The spelling of 71013930 in words is "seventy-one million, thirteen thousand, nine hundred thirty".