71328827 has 4 divisors (see below), whose sum is σ = 71347200. Its totient is φ = 71310456.

The previous prime is 71328809. The next prime is 71328841. The reversal of 71328827 is 72882317.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 72882317 = 197 ⋅369961.

It is a cyclic number.

It is not a de Polignac number, because 71328827 - 2⁸ = 71328571 is a prime.

It is a super-2 number, since 2×71328827² = 10175603122391858, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71327827) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 827 + ... + 11972.

It is an arithmetic number, because the mean of its divisors is an integer number (17836800).

Almost surely, 2^71328827 is an apocalyptic number.

71328827 is a deficient number, since it is larger than the sum of its proper divisors (18373).

71328827 is a wasteful number, since it uses less digits than its factorization.

71328827 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18372.

The product of its digits is 37632, while the sum is 38.

The square root of 71328827 is about 8445.6395258145. The cubic root of 71328827 is about 414.7200453778.

The spelling of 71328827 in words is "seventy-one million, three hundred twenty-eight thousand, eight hundred twenty-seven".