2144890 has 64 divisors (see below), whose sum is σ = 4727808. Its totient is φ = 691200.

The previous prime is 2144867. The next prime is 2144893. The reversal of 2144890 is 984412.

2144890 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 2×2144890² = 9201106224200, which contains 22 as substring.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (2144893) 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 31 ways as a sum of consecutive naturals, for example, 57952 + ... + 57988.

It is an arithmetic number, because the mean of its divisors is an integer number (73872).

2^2144890 is an apocalyptic number.

2144890 is an abundant number, since it is smaller than the sum of its proper divisors (2582918).

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

2144890 is a wasteful number, since it uses less digits than its factorization.

2144890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103.

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 2144890 is about 1464.5442977254. The cubic root of 2144890 is about 128.9639544343.

The spelling of 2144890 in words is "two million, one hundred forty-four thousand, eight hundred ninety".