2163456 has 72 divisors (see below), whose sum is σ = 6418160. Its totient is φ = 718848.

The previous prime is 2163443. The next prime is 2163461. The reversal of 2163456 is 6543612.

2163456 is a `hidden beast` number, since 21 + 634 + 5 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an alternating number because its digits alternate between even and odd.

It is a nialpdrome in base 12.

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, 6756 + ... + 7068.

2^2163456 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 2163456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3209080).

2163456 is an abundant number, since it is smaller than the sum of its proper divisors (4254704).

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

2163456 is an equidigital number, since it uses as much as digits as its factorization.

2163456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 338 (or 318 counting only the distinct ones).

The product of its digits is 4320, while the sum is 27.

The square root of 2163456 is about 1470.8691308203. The cubic root of 2163456 is about 129.3349865756.

It can be divided in two parts, 216 and 3456, that multiplied together give a square (746496 = 864²).

The spelling of 2163456 in words is "two million, one hundred sixty-three thousand, four hundred fifty-six".