2971998 has 32 divisors (see below), whose sum is σ = 6750720. Its totient is φ = 968760.

The previous prime is 2971993. The next prime is 2972027. The reversal of 2971998 is 8991792.

2971998 is nontrivially palindromic in base 4.

It is a super-2 number, since 2×2971998² = 17665544224008, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2971993) 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 15 ways as a sum of consecutive naturals, for example, 1953 + ... + 3123.

It is an arithmetic number, because the mean of its divisors is an integer number (210960).

2^2971998 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2971998, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3375360).

2971998 is an abundant number, since it is smaller than the sum of its proper divisors (3778722).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2971998 is a wasteful number, since it uses less digits than its factorization.

2971998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1229 (or 1223 counting only the distinct ones).

The product of its digits is 81648, while the sum is 45.

The square root of 2971998 is about 1723.9483750971. The cubic root of 2971998 is about 143.7748216747.

It can be divided in two parts, 2971 and 998, that added together give a square (3969 = 63²).

The spelling of 2971998 in words is "two million, nine hundred seventy-one thousand, nine hundred ninety-eight".