1656256 has 28 divisors (see below), whose sum is σ = 3757168. Its totient is φ = 709632.

The previous prime is 1656251. The next prime is 1656257. The reversal of 1656256 is 6526561.

It is a tau number, because it is divible by the number of its divisors (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1656251) 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, 1401 + ... + 2296.

2^1656256 is an apocalyptic number.

1656256 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1656256 is an abundant number, since it is smaller than the sum of its proper divisors (2100912).

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

1656256 is an equidigital number, since it uses as much as digits as its factorization.

1656256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3716 (or 3706 counting only the distinct ones).

The product of its digits is 10800, while the sum is 31.

The square root of 1656256 is about 1286.9560987073. The cubic root of 1656256 is about 118.3157301506.

The spelling of 1656256 in words is "one million, six hundred fifty-six thousand, two hundred fifty-six".