2881923 has 16 divisors (see below), whose sum is σ = 4375296. Its totient is φ = 1670240.

The previous prime is 2881897. The next prime is 2881937. The reversal of 2881923 is 3291882.

It is not a de Polignac number, because 2881923 - 2⁶ = 2881859 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (2881943) 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, 1140 + ... + 2657.

It is an arithmetic number, because the mean of its divisors is an integer number (273456).

2^2881923 is an apocalyptic number.

2881923 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

2881923 is a deficient number, since it is larger than the sum of its proper divisors (1493373).

2881923 is a wasteful number, since it uses less digits than its factorization.

2881923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3834.

The product of its digits is 6912, while the sum is 33.

The square root of 2881923 is about 1697.6227496119. The cubic root of 2881923 is about 142.3073913649.

It can be divided in two parts, 288 and 1923, that added together give a triangular number (2211 = T₆₆).

The spelling of 2881923 in words is "two million, eight hundred eighty-one thousand, nine hundred twenty-three".