2840690 has 16 divisors (see below), whose sum is σ = 5382720. Its totient is φ = 1076400.

The previous prime is 2840689. The next prime is 2840699. The reversal of 2840690 is 960482.

2840690 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×2840690² = 16139039352200, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2840699) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 7286 + ... + 7665.

It is an arithmetic number, because the mean of its divisors is an integer number (336420).

2^2840690 is an apocalyptic number.

2840690 is a deficient number, since it is larger than the sum of its proper divisors (2542030).

2840690 is a wasteful number, since it uses less digits than its factorization.

2840690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14977.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 2840690 is about 1685.4346620383. The cubic root of 2840690 is about 141.6254428304.

The spelling of 2840690 in words is "two million, eight hundred forty thousand, six hundred ninety".