2159206 has 8 divisors (see below), whose sum is σ = 3701520. Its totient is φ = 925368.

The previous prime is 2159197. The next prime is 2159207. The reversal of 2159206 is 6029512.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an Ulam number.

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 3 ways as a sum of consecutive naturals, for example, 77101 + ... + 77128.

It is an arithmetic number, because the mean of its divisors is an integer number (462690).

2^2159206 is an apocalyptic number.

2159206 is a deficient number, since it is larger than the sum of its proper divisors (1542314).

2159206 is a wasteful number, since it uses less digits than its factorization.

2159206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154238.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 2159206 is about 1469.4236965559. The cubic root of 2159206 is about 129.2502403761.

The spelling of 2159206 in words is "two million, one hundred fifty-nine thousand, two hundred six".