71328438 has 40 divisors (see below), whose sum is σ = 163742040. Its totient is φ = 23194080.

The previous prime is 71328437. The next prime is 71328449. The reversal of 71328438 is 83482317.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71328437) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1273 + ... + 12011.

It is an arithmetic number, because the mean of its divisors is an integer number (4093551).

Almost surely, 2^71328438 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 71328438, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81871020).

71328438 is an abundant number, since it is smaller than the sum of its proper divisors (92413602).

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

71328438 is a wasteful number, since it uses less digits than its factorization.

71328438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10794 (or 10785 counting only the distinct ones).

The product of its digits is 32256, while the sum is 36.

The square root of 71328438 is about 8445.6164961476. The cubic root of 71328438 is about 414.7192914685.

It can be divided in two parts, 71 and 328438, that added together give a cube (328509 = 69³).

The spelling of 71328438 in words is "seventy-one million, three hundred twenty-eight thousand, four hundred thirty-eight".