71263632 has 80 divisors (see below), whose sum is σ = 202487040. Its totient is φ = 21417600.

The previous prime is 71263631. The next prime is 71263639. The reversal of 71263632 is 23636217.

It is a self number, because there is not a number n which added to its sum of digits gives 71263632.

It is not an unprimeable number, because it can be changed into a prime (71263631) 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, 72907 + ... + 73877.

It is an arithmetic number, because the mean of its divisors is an integer number (2531088).

Almost surely, 2^71263632 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 71263632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (101243520).

71263632 is an abundant number, since it is smaller than the sum of its proper divisors (131223408).

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

71263632 is a wasteful number, since it uses less digits than its factorization.

71263632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1132 (or 1126 counting only the distinct ones).

The product of its digits is 9072, while the sum is 30.

The square root of 71263632 is about 8441.7789594374. The cubic root of 71263632 is about 414.5936546126.

Adding to 71263632 its reverse (23636217), we get a palindrome (94899849).

The spelling of 71263632 in words is "seventy-one million, two hundred sixty-three thousand, six hundred thirty-two".