2881992 has 48 divisors (see below), whose sum is σ = 7565040. Its totient is φ = 914848.

The previous prime is 2881951. The next prime is 2882021. The reversal of 2881992 is 2991882.

It is a nialpdrome in base 7.

It is a zygodrome in base 7.

It is a self number, because there is not a number n which added to its sum of digits gives 2881992.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 12583 + ... + 12809.

It is an arithmetic number, because the mean of its divisors is an integer number (157605).

2^2881992 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2881992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3782520).

2881992 is an abundant number, since it is smaller than the sum of its proper divisors (4683048).

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

2881992 is a wasteful number, since it uses less digits than its factorization.

2881992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 282 (or 255 counting only the distinct ones).

The product of its digits is 20736, while the sum is 39.

The square root of 2881992 is about 1697.6430720266. The cubic root of 2881992 is about 142.3085270802.

The spelling of 2881992 in words is "two million, eight hundred eighty-one thousand, nine hundred ninety-two".