71919996 has 24 divisors (see below), whose sum is σ = 177685200. Its totient is φ = 22563072.

The previous prime is 71919989. The next prime is 71920007. The reversal of 71919996 is 69991917.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 176071 + ... + 176478.

It is an arithmetic number, because the mean of its divisors is an integer number (7403550).

Almost surely, 2^71919996 is an apocalyptic number.

It is an amenable number.

71919996 is an abundant number, since it is smaller than the sum of its proper divisors (105765204).

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

71919996 is a wasteful number, since it uses less digits than its factorization.

71919996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 352573 (or 352571 counting only the distinct ones).

The product of its digits is 275562, while the sum is 51.

The square root of 71919996 is about 8480.5657830124. The cubic root of 71919996 is about 415.8626195154.

The spelling of 71919996 in words is "seventy-one million, nine hundred nineteen thousand, nine hundred ninety-six".