71244964 has 12 divisors (see below), whose sum is σ = 142489984. Its totient is φ = 30533544.

The previous prime is 71244947. The next prime is 71244973. The reversal of 71244964 is 46944217.

It is a happy number.

71244964 is an admirable number.

It is a super-2 number, since 2×71244964² = 10151689790722592, which contains 22 as substring.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

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 3 ways as a sum of consecutive naturals, for example, 1272204 + ... + 1272259.

Almost surely, 2^71244964 is an apocalyptic number.

It is an amenable number.

71244964 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

71244964 is a wasteful number, since it uses less digits than its factorization.

71244964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2544474 (or 2544472 counting only the distinct ones).

The product of its digits is 48384, while the sum is 37.

The square root of 71244964 is about 8440.6731959009. The cubic root of 71244964 is about 414.5574495617.

The spelling of 71244964 in words is "seventy-one million, two hundred forty-four thousand, nine hundred sixty-four".