71070032 has 80 divisors (see below), whose sum is σ = 161507520. Its totient is φ = 29952000.

The previous prime is 71070029. The next prime is 71070061. The reversal of 71070032 is 23007017.

It is a junction number, because it is equal to n+sod(n) for n = 71069986 and 71070013.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 177032 + ... + 177432.

It is an arithmetic number, because the mean of its divisors is an integer number (2018844).

Almost surely, 2^71070032 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 71070032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80753760).

71070032 is an abundant number, since it is smaller than the sum of its proper divisors (90437488).

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

71070032 is a wasteful number, since it uses less digits than its factorization.

71070032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 492 (or 486 counting only the distinct ones).

The product of its (nonzero) digits is 294, while the sum is 20.

The square root of 71070032 is about 8430.3043835914. The cubic root of 71070032 is about 414.2178756256.

Adding to 71070032 its reverse (23007017), we get a palindrome (94077049).

The spelling of 71070032 in words is "seventy-one million, seventy thousand, thirty-two".