2288881 has 4 divisors (see below), whose sum is σ = 2615872. Its totient is φ = 1961892.

The previous prime is 2288879. The next prime is 2288887. The reversal of 2288881 is 1888822.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2288881 - 2¹ = 2288879 is a prime.

It is a super-2 number, since 2×2288881² = 10477952464322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2288881.

It is not an unprimeable number, because it can be changed into a prime (2288887) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 163485 + ... + 163498.

It is an arithmetic number, because the mean of its divisors is an integer number (653968).

2^2288881 is an apocalyptic number.

It is an amenable number.

2288881 is a deficient number, since it is larger than the sum of its proper divisors (326991).

2288881 is an equidigital number, since it uses as much as digits as its factorization.

2288881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 326990.

The product of its digits is 16384, while the sum is 37.

The square root of 2288881 is about 1512.9048218576. The cubic root of 2288881 is about 131.7875561901.

The spelling of 2288881 in words is "two million, two hundred eighty-eight thousand, eight hundred eighty-one".