71980936 has 32 divisors (see below), whose sum is σ = 137635200. Its totient is φ = 35284480.

The previous prime is 71980927. The next prime is 71980957. The reversal of 71980936 is 63908917.

It is a junction number, because it is equal to n+sod(n) for n = 71980892 and 71980901.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 200325 + ... + 200683.

It is an arithmetic number, because the mean of its divisors is an integer number (4301100).

Almost surely, 2^71980936 is an apocalyptic number.

It is an amenable number.

71980936 is a deficient number, since it is larger than the sum of its proper divisors (65654264).

71980936 is a wasteful number, since it uses less digits than its factorization.

71980936 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 789 (or 785 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 43.

The square root of 71980936 is about 8484.1579428957. The cubic root of 71980936 is about 415.9800440378.

The spelling of 71980936 in words is "seventy-one million, nine hundred eighty thousand, nine hundred thirty-six".