2128938 has 32 divisors (see below), whose sum is σ = 4910976. Its totient is φ = 602688.

The previous prime is 2128933. The next prime is 2128963. The reversal of 2128938 is 8398212.

It is a plaindrome in base 11.

It is a junction number, because it is equal to n+sod(n) for n = 2128899 and 2128908.

It is not an unprimeable number, because it can be changed into a prime (2128933) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7120 + ... + 7412.

It is an arithmetic number, because the mean of its divisors is an integer number (153468).

2^2128938 is an apocalyptic number.

2128938 is an abundant number, since it is smaller than the sum of its proper divisors (2782038).

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

2128938 is a wasteful number, since it uses less digits than its factorization.

2128938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 478.

The product of its digits is 6912, while the sum is 33.

The square root of 2128938 is about 1459.0880713651. The cubic root of 2128938 is about 128.6434478343.

The spelling of 2128938 in words is "two million, one hundred twenty-eight thousand, nine hundred thirty-eight".