2688241 has 4 divisors (see below), whose sum is σ = 2728432. Its totient is φ = 2648052.

The previous prime is 2688239. The next prime is 2688299. The reversal of 2688241 is 1428862.

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 2688241 - 2¹ = 2688239 is a prime.

It is a Duffinian number.

2688241 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2688221) 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, 19995 + ... + 20128.

It is an arithmetic number, because the mean of its divisors is an integer number (682108).

2^2688241 is an apocalyptic number.

It is an amenable number.

2688241 is a deficient number, since it is larger than the sum of its proper divisors (40191).

2688241 is an equidigital number, since it uses as much as digits as its factorization.

2688241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40190.

The product of its digits is 6144, while the sum is 31.

The square root of 2688241 is about 1639.5856183804. The cubic root of 2688241 is about 139.0452210404.

The spelling of 2688241 in words is "two million, six hundred eighty-eight thousand, two hundred forty-one".