71159412 has 12 divisors (see below), whose sum is σ = 166038656. Its totient is φ = 23719800.

The previous prime is 71159411. The next prime is 71159423. The reversal of 71159412 is 21495117.

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 71159412.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71159411) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2964964 + ... + 2964987.

Almost surely, 2^71159412 is an apocalyptic number.

It is an amenable number.

71159412 is an abundant number, since it is smaller than the sum of its proper divisors (94879244).

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

71159412 is a wasteful number, since it uses less digits than its factorization.

71159412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5929958 (or 5929956 counting only the distinct ones).

The product of its digits is 2520, while the sum is 30.

The square root of 71159412 is about 8435.6038313804. The cubic root of 71159412 is about 414.3914475384.

The spelling of 71159412 in words is "seventy-one million, one hundred fifty-nine thousand, four hundred twelve".