71282512 has 40 divisors (see below), whose sum is σ = 159315200. Its totient is φ = 30264192.

The previous prime is 71282441. The next prime is 71282521. The reversal of 71282512 is 21528217.

It is a Harshad number since it is a multiple of its sum of digits (28).

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, 9289 + ... + 15127.

It is an arithmetic number, because the mean of its divisors is an integer number (3982880).

Almost surely, 2^71282512 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 71282512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79657600).

71282512 is an abundant number, since it is smaller than the sum of its proper divisors (88032688).

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

71282512 is a wasteful number, since it uses less digits than its factorization.

71282512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5963 (or 5957 counting only the distinct ones).

The product of its digits is 2240, while the sum is 28.

The square root of 71282512 is about 8442.8971330936. The cubic root of 71282512 is about 414.6302643897.

The spelling of 71282512 in words is "seventy-one million, two hundred eighty-two thousand, five hundred twelve".