71248972 has 12 divisors (see below), whose sum is σ = 132020280. Its totient is φ = 33528896.

The previous prime is 71248967. The next prime is 71248987. The reversal of 71248972 is 27984217.

It is a super-2 number, since 2×71248972² = 10152832022113568, which contains 22 as substring.

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, 523822 + ... + 523957.

It is an arithmetic number, because the mean of its divisors is an integer number (11001690).

Almost surely, 2^71248972 is an apocalyptic number.

It is an amenable number.

71248972 is a deficient number, since it is larger than the sum of its proper divisors (60771308).

71248972 is a wasteful number, since it uses less digits than its factorization.

71248972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1047800 (or 1047798 counting only the distinct ones).

The product of its digits is 56448, while the sum is 40.

The square root of 71248972 is about 8440.9106143828. The cubic root of 71248972 is about 414.5652232813.

The spelling of 71248972 in words is "seventy-one million, two hundred forty-eight thousand, nine hundred seventy-two".