71047536 has 160 divisors (see below), whose sum is σ = 228556800. Its totient is φ = 18558720.

The previous prime is 71047531. The next prime is 71047549. The reversal of 71047536 is 63574017.

It is a junction number, because it is equal to n+sod(n) for n = 71047497 and 71047506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71047531) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 197725 + ... + 198083.

It is an arithmetic number, because the mean of its divisors is an integer number (1428480).

Almost surely, 2^71047536 is an apocalyptic number.

71047536 is a gapful number since it is divisible by the number (76) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 71047536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (114278400).

71047536 is an abundant number, since it is smaller than the sum of its proper divisors (157509264).

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

71047536 is a wasteful number, since it uses less digits than its factorization.

71047536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 427 (or 421 counting only the distinct ones).

The product of its (nonzero) digits is 17640, while the sum is 33.

The square root of 71047536 is about 8428.9700438428. The cubic root of 71047536 is about 414.1741664915.

The spelling of 71047536 in words is "seventy-one million, forty-seven thousand, five hundred thirty-six".