971994256 has 10 divisors (see below), whose sum is σ = 1883238902. Its totient is φ = 485997120.

The previous prime is 971994241. The next prime is 971994271. The reversal of 971994256 is 652499179.

It is an interprime number because it is at equal distance from previous prime (971994241) and next prime (971994271).

It can be written as a sum of positive squares in only one way, i.e., 811110400 + 160883856 = 28480^2 + 12684^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30374805 + ... + 30374836.

Almost surely, 2^971994256 is an apocalyptic number.

It is an amenable number.

971994256 is a deficient number, since it is larger than the sum of its proper divisors (911244646).

971994256 is a wasteful number, since it uses less digits than its factorization.

971994256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60749649 (or 60749643 counting only the distinct ones).

The product of its digits is 1224720, while the sum is 52.

The square root of 971994256 is about 31176.8224166607. The cubic root of 971994256 is about 990.5762234022.

The spelling of 971994256 in words is "nine hundred seventy-one million, nine hundred ninety-four thousand, two hundred fifty-six".