2931998 has 16 divisors (see below), whose sum is σ = 4557696. Its totient is φ = 1413720.

The previous prime is 2931997. The next prime is 2932003. The reversal of 2931998 is 8991392.

It is a super-2 number, since 2×2931998² = 17193224544008, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2931997) 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 7 ways as a sum of consecutive naturals, for example, 8693 + ... + 9023.

It is an arithmetic number, because the mean of its divisors is an integer number (284856).

2^2931998 is an apocalyptic number.

2931998 is a deficient number, since it is larger than the sum of its proper divisors (1625698).

2931998 is a wasteful number, since it uses less digits than its factorization.

2931998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 479.

The product of its digits is 34992, while the sum is 41.

The square root of 2931998 is about 1712.3077994333. The cubic root of 2931998 is about 143.1268862537.

The spelling of 2931998 in words is "two million, nine hundred thirty-one thousand, nine hundred ninety-eight".