71147960 has 64 divisors (see below), whose sum is σ = 175301280. Its totient is φ = 25827840.

The previous prime is 71147959. The next prime is 71147963. The reversal of 71147960 is 6974117.

It is a self number, because there is not a number n which added to its sum of digits gives 71147960.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71147963) 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 15 ways as a sum of consecutive naturals, for example, 30599 + ... + 32841.

Almost surely, 2^71147960 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 71147960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87650640).

71147960 is an abundant number, since it is smaller than the sum of its proper divisors (104153320).

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

71147960 is a wasteful number, since it uses less digits than its factorization.

71147960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2328 (or 2324 counting only the distinct ones).

The product of its (nonzero) digits is 10584, while the sum is 35.

The square root of 71147960 is about 8434.9250144859. The cubic root of 71147960 is about 414.3692163942.

The spelling of 71147960 in words is "seventy-one million, one hundred forty-seven thousand, nine hundred sixty".