2839540 has 24 divisors (see below), whose sum is σ = 6505632. Its totient is φ = 1032480.

The previous prime is 2839519. The next prime is 2839541. The reversal of 2839540 is 459382.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2839541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6234 + ... + 6673.

It is an arithmetic number, because the mean of its divisors is an integer number (271068).

2^2839540 is an apocalyptic number.

2839540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2839540 is an abundant number, since it is smaller than the sum of its proper divisors (3666092).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2839540 is a wasteful number, since it uses less digits than its factorization.

2839540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12927 (or 12925 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 2839540 is about 1685.0934692177. The cubic root of 2839540 is about 141.6063287839.

The spelling of 2839540 in words is "two million, eight hundred thirty-nine thousand, five hundred forty".