71001738 has 32 divisors (see below), whose sum is σ = 159001920. Its totient is φ = 23484240.

The previous prime is 71001731. The next prime is 71001739. The reversal of 71001738 is 83710017.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71001731) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 2056 + ... + 12092.

It is an arithmetic number, because the mean of its divisors is an integer number (4968810).

Almost surely, 2^71001738 is an apocalyptic number.

71001738 is an abundant number, since it is smaller than the sum of its proper divisors (88000182).

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

71001738 is a wasteful number, since it uses less digits than its factorization.

71001738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10179 (or 10173 counting only the distinct ones).

The product of its (nonzero) digits is 1176, while the sum is 27.

The square root of 71001738 is about 8426.2529038713. The cubic root of 71001738 is about 414.0851536665.

The spelling of 71001738 in words is "seventy-one million, one thousand, seven hundred thirty-eight".