2817998 has 4 divisors (see below), whose sum is σ = 4227000. Its totient is φ = 1408998.

The previous prime is 2817973. The next prime is 2818027. The reversal of 2817998 is 8997182.

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

It is a super-2 number, since 2×2817998² = 15882225456008, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 704498 + ... + 704501.

It is an arithmetic number, because the mean of its divisors is an integer number (1056750).

2^2817998 is an apocalyptic number.

2817998 is a deficient number, since it is larger than the sum of its proper divisors (1409002).

2817998 is a wasteful number, since it uses less digits than its factorization.

2817998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1409001.

The product of its digits is 72576, while the sum is 44.

The square root of 2817998 is about 1678.6893697167. The cubic root of 2817998 is about 141.2473234150.

The spelling of 2817998 in words is "two million, eight hundred seventeen thousand, nine hundred ninety-eight".