71012800 has 42 divisors (see below), whose sum is σ = 174739808. Its totient is φ = 28404480.

The previous prime is 71012783. The next prime is 71012801. The reversal of 71012800 is 821017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71012801) 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 5 ways as a sum of consecutive naturals, for example, 20592 + ... + 23791.

Almost surely, 2^71012800 is an apocalyptic number.

It is an amenable number.

71012800 is an abundant number, since it is smaller than the sum of its proper divisors (103727008).

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

71012800 is a wasteful number, since it uses less digits than its factorization.

71012800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44405 (or 44390 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 19.

The square root of 71012800 is about 8426.9092792079. The cubic root of 71012800 is about 414.1066572345.

Adding to 71012800 its reverse (821017), we get a palindrome (71833817).

The spelling of 71012800 in words is "seventy-one million, twelve thousand, eight hundred".