2840138 has 24 divisors (see below), whose sum is σ = 5036292. Its totient is φ = 1197504.

The previous prime is 2840119. The next prime is 2840161. The reversal of 2840138 is 8310482.

2840138 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 2798929 + 41209 = 1673^2 + 203^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6956 + ... + 7352.

2^2840138 is an apocalyptic number.

2840138 is a deficient number, since it is larger than the sum of its proper divisors (2196154).

2840138 is a wasteful number, since it uses less digits than its factorization.

2840138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 486 (or 479 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 26.

The square root of 2840138 is about 1685.2708981051. The cubic root of 2840138 is about 141.6162687320.

The spelling of 2840138 in words is "two million, eight hundred forty thousand, one hundred thirty-eight".