2817982 has 4 divisors (see below), whose sum is σ = 4226976. Its totient is φ = 1408990.

The previous prime is 2817973. The next prime is 2818027. The reversal of 2817982 is 2897182.

It is a semiprime because it is the product of two primes.

It is a congruent number.

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, 704494 + ... + 704497.

It is an arithmetic number, because the mean of its divisors is an integer number (1056744).

2^2817982 is an apocalyptic number.

2817982 is a deficient number, since it is larger than the sum of its proper divisors (1408994).

2817982 is a wasteful number, since it uses less digits than its factorization.

2817982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1408993.

The product of its digits is 16128, while the sum is 37.

The square root of 2817982 is about 1678.6846040874. The cubic root of 2817982 is about 141.2470560903.

The spelling of 2817982 in words is "two million, eight hundred seventeen thousand, nine hundred eighty-two".