71328885 has 16 divisors (see below), whose sum is σ = 114544896. Its totient is φ = 37902528.

The previous prime is 71328883. The next prime is 71328919. The reversal of 71328885 is 58882317.

It is a happy number.

It is not a de Polignac number, because 71328885 - 2¹ = 71328883 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71328883) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4429 + ... + 12738.

It is an arithmetic number, because the mean of its divisors is an integer number (7159056).

Almost surely, 2^71328885 is an apocalyptic number.

It is an amenable number.

71328885 is a deficient number, since it is larger than the sum of its proper divisors (43216011).

71328885 is a wasteful number, since it uses less digits than its factorization.

71328885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17452.

The product of its digits is 107520, while the sum is 42.

The square root of 71328885 is about 8445.6429595384. The cubic root of 71328885 is about 414.7201577856.

The spelling of 71328885 in words is "seventy-one million, three hundred twenty-eight thousand, eight hundred eighty-five".