2159886 has 8 divisors (see below), whose sum is σ = 4319784. Its totient is φ = 719960.

The previous prime is 2159881. The next prime is 2159887. The reversal of 2159886 is 6889512.

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

2159886 is an admirable number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2159881) 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, 179985 + ... + 179996.

It is an arithmetic number, because the mean of its divisors is an integer number (539973).

2^2159886 is an apocalyptic number.

2159886 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

2159886 is a wasteful number, since it uses less digits than its factorization.

2159886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 359986.

The product of its digits is 34560, while the sum is 39.

The square root of 2159886 is about 1469.6550615706. The cubic root of 2159886 is about 129.2638072364.

It can be divided in two parts, 215 and 9886, that added together give a palindrome (10101).

The spelling of 2159886 in words is "two million, one hundred fifty-nine thousand, eight hundred eighty-six".