71132128 has 24 divisors (see below), whose sum is σ = 144872280. Its totient is φ = 34339200.

The previous prime is 71132119. The next prime is 71132177. The reversal of 71132128 is 82123117.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37398 + ... + 39253.

It is an arithmetic number, because the mean of its divisors is an integer number (6036345).

Almost surely, 2^71132128 is an apocalyptic number.

It is an amenable number.

71132128 is an abundant number, since it is smaller than the sum of its proper divisors (73740152).

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

71132128 is a wasteful number, since it uses less digits than its factorization.

71132128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76690 (or 76682 counting only the distinct ones).

The product of its digits is 672, while the sum is 25.

The square root of 71132128 is about 8433.9864832711. The cubic root of 71132128 is about 414.3384786654.

The spelling of 71132128 in words is "seventy-one million, one hundred thirty-two thousand, one hundred twenty-eight".