972243812 has 12 divisors (see below), whose sum is σ = 1717036860. Its totient is φ = 481661856.

The previous prime is 972243809. The next prime is 972243827. The reversal of 972243812 is 218342279.

It can be written as a sum of positive squares in 2 ways, for example, as 432889636 + 539354176 = 20806^2 + 23224^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1114523 + ... + 1115394.

It is an arithmetic number, because the mean of its divisors is an integer number (143086405).

Almost surely, 2^972243812 is an apocalyptic number.

It is an amenable number.

972243812 is a deficient number, since it is larger than the sum of its proper divisors (744793048).

972243812 is a wasteful number, since it uses less digits than its factorization.

972243812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2230030 (or 2230028 counting only the distinct ones).

The product of its digits is 48384, while the sum is 38.

The square root of 972243812 is about 31180.8244278435. The cubic root of 972243812 is about 990.6609917655.

The spelling of 972243812 in words is "nine hundred seventy-two million, two hundred forty-three thousand, eight hundred twelve".