2123648 has 32 divisors (see below), whose sum is σ = 4332960. Its totient is φ = 1036288.

The previous prime is 2123617. The next prime is 2123663. The reversal of 2123648 is 8463212.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5840 + ... + 6192.

It is an arithmetic number, because the mean of its divisors is an integer number (135405).

2^2123648 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 2123648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2166480).

2123648 is an abundant number, since it is smaller than the sum of its proper divisors (2209312).

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

2123648 is an equidigital number, since it uses as much as digits as its factorization.

2123648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 414 (or 402 counting only the distinct ones).

The product of its digits is 2304, while the sum is 26.

The square root of 2123648 is about 1457.2741677529. The cubic root of 2123648 is about 128.5368080801.

The spelling of 2123648 in words is "two million, one hundred twenty-three thousand, six hundred forty-eight".