71254812 has 12 divisors (see below), whose sum is σ = 166261256. Its totient is φ = 23751600.

The previous prime is 71254811. The next prime is 71254817. The reversal of 71254812 is 21845217.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 71254812.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71254811) 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 3 ways as a sum of consecutive naturals, for example, 2968939 + ... + 2968962.

Almost surely, 2^71254812 is an apocalyptic number.

It is an amenable number.

71254812 is an abundant number, since it is smaller than the sum of its proper divisors (95006444).

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

71254812 is a wasteful number, since it uses less digits than its factorization.

71254812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5937908 (or 5937906 counting only the distinct ones).

The product of its digits is 4480, while the sum is 30.

The square root of 71254812 is about 8441.2565415346. The cubic root of 71254812 is about 414.5765497359.

The spelling of 71254812 in words is "seventy-one million, two hundred fifty-four thousand, eight hundred twelve".