2928881 has 2 divisors, whose sum is σ = 2928882. Its totient is φ = 2928880.

The previous prime is 2928851. The next prime is 2928929. The reversal of 2928881 is 1888292.

2928881 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2835856 + 93025 = 1684^2 + 305^2 .

It is a cyclic number.

It is not a de Polignac number, because 2928881 - 2⁶ = 2928817 is a prime.

It is a super-2 number, since 2×2928881² = 17156687824322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (2928851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1464440 + 1464441.

It is an arithmetic number, because the mean of its divisors is an integer number (1464441).

2^2928881 is an apocalyptic number.

It is an amenable number.

2928881 is a deficient number, since it is larger than the sum of its proper divisors (1).

2928881 is an equidigital number, since it uses as much as digits as its factorization.

2928881 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18432, while the sum is 38.

The square root of 2928881 is about 1711.3973822581. The cubic root of 2928881 is about 143.0761489874.

The spelling of 2928881 in words is "two million, nine hundred twenty-eight thousand, eight hundred eighty-one".