7971286 has 12 divisors (see below), whose sum is σ = 12131532. Its totient is φ = 3927936.

The previous prime is 7971281. The next prime is 7971307. The reversal of 7971286 is 6821797.

It is a zygodrome in base 3.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7971281) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 41206 + ... + 41398.

It is an arithmetic number, because the mean of its divisors is an integer number (1010961).

Almost surely, 2^7971286 is an apocalyptic number.

7971286 is a deficient number, since it is larger than the sum of its proper divisors (4160246).

7971286 is a wasteful number, since it uses less digits than its factorization.

7971286 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 495 (or 302 counting only the distinct ones).

The product of its digits is 42336, while the sum is 40.

The square root of 7971286 is about 2823.3465957973. The cubic root of 7971286 is about 199.7604298119.

The spelling of 7971286 in words is "seven million, nine hundred seventy-one thousand, two hundred eighty-six".