71751248 has 20 divisors (see below), whose sum is σ = 139955700. Its totient is φ = 35633664.

The previous prime is 71751247. The next prime is 71751263. The reversal of 71751248 is 84215717.

It can be written as a sum of positive squares in 2 ways, for example, as 3655744 + 68095504 = 1912^2 + 8252^2 .

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71751247) 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 3 ways as a sum of consecutive naturals, for example, 12665 + ... + 17432.

It is an arithmetic number, because the mean of its divisors is an integer number (6997785).

Almost surely, 2^71751248 is an apocalyptic number.

It is an amenable number.

71751248 is a deficient number, since it is larger than the sum of its proper divisors (68204452).

71751248 is a wasteful number, since it uses less digits than its factorization.

71751248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30254 (or 30248 counting only the distinct ones).

The product of its digits is 15680, while the sum is 35.

The square root of 71751248 is about 8470.6108398391. The cubic root of 71751248 is about 415.5371145738.

The spelling of 71751248 in words is "seventy-one million, seven hundred fifty-one thousand, two hundred forty-eight".