2138028 has 12 divisors (see below), whose sum is σ = 4988760. Its totient is φ = 712672.

The previous prime is 2137999. The next prime is 2138029. The reversal of 2138028 is 8208312.

2138028 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 2137989 and 2138007.

It is not an unprimeable number, because it can be changed into a prime (2138029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 89073 + ... + 89096.

It is an arithmetic number, because the mean of its divisors is an integer number (415730).

2^2138028 is an apocalyptic number.

It is an amenable number.

2138028 is an abundant number, since it is smaller than the sum of its proper divisors (2850732).

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

2138028 is a wasteful number, since it uses less digits than its factorization.

2138028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178176 (or 178174 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 24.

The square root of 2138028 is about 1462.1997127616. The cubic root of 2138028 is about 128.8262789891.

The spelling of 2138028 in words is "two million, one hundred thirty-eight thousand, twenty-eight".