2146656 has 48 divisors (see below), whose sum is σ = 5745600. Its totient is φ = 701568.

The previous prime is 2146633. The next prime is 2146663. The reversal of 2146656 is 6566412.

It is a tau number, because it is divible by the number of its divisors (48).

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5475 + ... + 5853.

It is an arithmetic number, because the mean of its divisors is an integer number (119700).

2^2146656 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2146656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2872800).

2146656 is an abundant number, since it is smaller than the sum of its proper divisors (3598944).

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

2146656 is a wasteful number, since it uses less digits than its factorization.

2146656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 451 (or 443 counting only the distinct ones).

The product of its digits is 8640, while the sum is 30.

The square root of 2146656 is about 1465.1470915918. The cubic root of 2146656 is about 128.9993389786. Note that the first 3 decimals are identical.

The spelling of 2146656 in words is "two million, one hundred forty-six thousand, six hundred fifty-six".