71144700 has 72 divisors (see below), whose sum is σ = 224568960. Its totient is φ = 17246400.

The previous prime is 71144663. The next prime is 71144701. The reversal of 71144700 is 744117.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71144701) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7480 + ... + 14079.

Almost surely, 2^71144700 is an apocalyptic number.

It is an amenable number.

71144700 is an abundant number, since it is smaller than the sum of its proper divisors (153424260).

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

71144700 is a wasteful number, since it uses less digits than its factorization.

71144700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21587 (or 21580 counting only the distinct ones).

The product of its (nonzero) digits is 784, while the sum is 24.

The square root of 71144700 is about 8434.7317681121. The cubic root of 71144700 is about 414.3628874975.

Adding to 71144700 its reverse (744117), we get a palindrome (71888817).

The spelling of 71144700 in words is "seventy-one million, one hundred forty-four thousand, seven hundred".