2143908 has 60 divisors (see below), whose sum is σ = 6047580. Its totient is φ = 658368.

The previous prime is 2143901. The next prime is 2143909. The reversal of 2143908 is 8093412.

It can be written as a sum of positive squares in 2 ways, for example, as 1016064 + 1127844 = 1008^2 + 1062^2 .

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

It is not an unprimeable number, because it can be changed into a prime (2143901) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 3958 + ... + 4466.

It is an arithmetic number, because the mean of its divisors is an integer number (100793).

2^2143908 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 2143908, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3023790).

2143908 is an abundant number, since it is smaller than the sum of its proper divisors (3903672).

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

2143908 is a wasteful number, since it uses less digits than its factorization.

2143908 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 538 (or 527 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 2143908 is about 1464.2090014749. The cubic root of 2143908 is about 128.9442701405.

The spelling of 2143908 in words is "two million, one hundred forty-three thousand, nine hundred eight".