2159204 has 24 divisors (see below), whose sum is σ = 4050648. Its totient is φ = 1003520.

The previous prime is 2159197. The next prime is 2159207. The reversal of 2159204 is 4029512.

It can be written as a sum of positive squares in 4 ways, for example, as 193600 + 1965604 = 440^2 + 1402^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2159204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2159207) 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, 7544 + ... + 7824.

It is an arithmetic number, because the mean of its divisors is an integer number (168777).

2^2159204 is an apocalyptic number.

It is an amenable number.

2159204 is a deficient number, since it is larger than the sum of its proper divisors (1891444).

2159204 is a wasteful number, since it uses less digits than its factorization.

2159204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 415 (or 413 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 2159204 is about 1469.4230160168. The cubic root of 2159204 is about 129.2502004693.

The spelling of 2159204 in words is "two million, one hundred fifty-nine thousand, two hundred four".