2540289 has 8 divisors (see below), whose sum is σ = 3420352. Its totient is φ = 1676880.

The previous prime is 2540269. The next prime is 2540323. The reversal of 2540289 is 9820452.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2540289 - 2⁸ = 2540033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2540249) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3802 + ... + 4419.

It is an arithmetic number, because the mean of its divisors is an integer number (427544).

2^2540289 is an apocalyptic number.

It is an amenable number.

2540289 is a deficient number, since it is larger than the sum of its proper divisors (880063).

2540289 is a wasteful number, since it uses less digits than its factorization.

2540289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8327.

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 2540289 is about 1593.8284098359. The cubic root of 2540289 is about 136.4460735070.

The spelling of 2540289 in words is "two million, five hundred forty thousand, two hundred eighty-nine".