71919012 has 36 divisors (see below), whose sum is σ = 184457168. Its totient is φ = 21793200.

The previous prime is 71919007. The next prime is 71919037. The reversal of 71919012 is 21091917.

It is a super-2 number, since 2×71919012² = 10344688574112288, which contains 22 as substring.

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 11 ways as a sum of consecutive naturals, for example, 23314 + ... + 26217.

Almost surely, 2^71919012 is an apocalyptic number.

It is an amenable number.

71919012 is an abundant number, since it is smaller than the sum of its proper divisors (112538156).

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

71919012 is a wasteful number, since it uses less digits than its factorization.

71919012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49560 (or 49547 counting only the distinct ones).

The product of its (nonzero) digits is 1134, while the sum is 30.

The square root of 71919012 is about 8480.5077678167. The cubic root of 71919012 is about 415.8607229141.

The spelling of 71919012 in words is "seventy-one million, nine hundred nineteen thousand, twelve".