2089656 has 24 divisors (see below), whose sum is σ = 5659680. Its totient is φ = 696528.

The previous prime is 2089651. The next prime is 2089669. The reversal of 2089656 is 6569802.

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 2089656.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2089651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 14440 + ... + 14583.

It is an arithmetic number, because the mean of its divisors is an integer number (235820).

2^2089656 is an apocalyptic number.

It is an amenable number.

2089656 is an abundant number, since it is smaller than the sum of its proper divisors (3570024).

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

2089656 is a wasteful number, since it uses less digits than its factorization.

2089656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29035 (or 29028 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 2089656 is about 1445.5642496963. The cubic root of 2089656 is about 127.8473114229.

It can be divided in two parts, 20 and 89656, that added together give a triangular number (89676 = T₄₂₃).

The spelling of 2089656 in words is "two million, eighty-nine thousand, six hundred fifty-six".