71488812 has 24 divisors (see below), whose sum is σ = 168011200. Its totient is φ = 23657616.

The previous prime is 71488793. The next prime is 71488819. The reversal of 71488812 is 21888417.

It is a happy number.

It is a super-2 number, since 2×71488812² = 10221300482342688, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (71488819) by changing a digit.

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, 19762 + ... + 23097.

Almost surely, 2^71488812 is an apocalyptic number.

It is an amenable number.

71488812 is an abundant number, since it is smaller than the sum of its proper divisors (96522388).

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

71488812 is a wasteful number, since it uses less digits than its factorization.

71488812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43005 (or 43003 counting only the distinct ones).

The product of its digits is 28672, while the sum is 39.

The square root of 71488812 is about 8455.1056764537. The cubic root of 71488812 is about 415.0298754319.

The spelling of 71488812 in words is "seventy-one million, four hundred eighty-eight thousand, eight hundred twelve".