71121792 has 64 divisors (see below), whose sum is σ = 215913600. Its totient is φ = 20319744.

The previous prime is 71121709. The next prime is 71121797. The reversal of 71121792 is 29712117.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71121797) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10542 + ... + 15917.

It is an arithmetic number, because the mean of its divisors is an integer number (3373650).

Almost surely, 2^71121792 is an apocalyptic number.

It is an amenable number.

71121792 is an abundant number, since it is smaller than the sum of its proper divisors (144791808).

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

71121792 is a wasteful number, since it uses less digits than its factorization.

71121792 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26483 (or 26471 counting only the distinct ones).

The product of its digits is 1764, while the sum is 30.

The square root of 71121792 is about 8433.3737021432. The cubic root of 71121792 is about 414.3184089253.

The spelling of 71121792 in words is "seventy-one million, one hundred twenty-one thousand, seven hundred ninety-two".