71285750 has 32 divisors (see below), whose sum is σ = 134020224. Its totient is φ = 28392000.

The previous prime is 71285749. The next prime is 71285761. The reversal of 71285750 is 5758217.

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

It is a self number, because there is not a number n which added to its sum of digits gives 71285750.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 77795 + ... + 78705.

It is an arithmetic number, because the mean of its divisors is an integer number (4188132).

Almost surely, 2^71285750 is an apocalyptic number.

71285750 is a deficient number, since it is larger than the sum of its proper divisors (62734474).

71285750 is a wasteful number, since it uses less digits than its factorization.

71285750 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1241 (or 1231 counting only the distinct ones).

The product of its (nonzero) digits is 19600, while the sum is 35.

The square root of 71285750 is about 8443.0888897370. The cubic root of 71285750 is about 414.6365424722.

The spelling of 71285750 in words is "seventy-one million, two hundred eighty-five thousand, seven hundred fifty".