2889831 has 16 divisors (see below), whose sum is σ = 4429568. Its totient is φ = 1641600.

The previous prime is 2889829. The next prime is 2889833. The reversal of 2889831 is 1389882.

It is an interprime number because it is at equal distance from previous prime (2889829) and next prime (2889833).

It is not a de Polignac number, because 2889831 - 2¹ = 2889829 is a prime.

It is a super-2 number, since 2×2889831² = 16702246417122, which contains 22 as substring.

It is a Duffinian number.

It is a nialpdrome in base 12.

It is a self number, because there is not a number n which added to its sum of digits gives 2889831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2889833) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4776 + ... + 5346.

It is an arithmetic number, because the mean of its divisors is an integer number (276848).

2^2889831 is an apocalyptic number.

2889831 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

2889831 is a deficient number, since it is larger than the sum of its proper divisors (1539737).

2889831 is a wasteful number, since it uses less digits than its factorization.

2889831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 822.

The product of its digits is 27648, while the sum is 39.

The square root of 2889831 is about 1699.9502933910. The cubic root of 2889831 is about 142.4374363709.

The spelling of 2889831 in words is "two million, eight hundred eighty-nine thousand, eight hundred thirty-one".