2288981 has 4 divisors (see below), whose sum is σ = 2294592. Its totient is φ = 2283372.

The previous prime is 2288953. The next prime is 2289013. The reversal of 2288981 is 1898822.

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 2288981 - 2¹⁴ = 2272597 is a prime.

It is a super-2 number, since 2×2288981² = 10478868036722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2288281) 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, 2141 + ... + 3026.

It is an arithmetic number, because the mean of its divisors is an integer number (573648).

2^2288981 is an apocalyptic number.

It is an amenable number.

2288981 is a deficient number, since it is larger than the sum of its proper divisors (5611).

2288981 is an equidigital number, since it uses as much as digits as its factorization.

2288981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5610.

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

The square root of 2288981 is about 1512.9378705023. The cubic root of 2288981 is about 131.7894754050.

The spelling of 2288981 in words is "two million, two hundred eighty-eight thousand, nine hundred eighty-one".