2139648 has 80 divisors (see below), whose sum is σ = 6547200. Its totient is φ = 608256.

The previous prime is 2139611. The next prime is 2139653. The reversal of 2139648 is 8469312.

2139648 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10653 + ... + 10851.

It is an arithmetic number, because the mean of its divisors is an integer number (81840).

2^2139648 is an apocalyptic number.

2139648 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2139648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3273600).

2139648 is an abundant number, since it is smaller than the sum of its proper divisors (4407552).

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

2139648 is an equidigital number, since it uses as much as digits as its factorization.

2139648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227 (or 211 counting only the distinct ones).

The product of its digits is 10368, while the sum is 33.

The square root of 2139648 is about 1462.7535677618. The cubic root of 2139648 is about 128.8588083235.

The spelling of 2139648 in words is "two million, one hundred thirty-nine thousand, six hundred forty-eight".