2056138 has 12 divisors (see below), whose sum is σ = 3587922. Its totient is φ = 881160.

The previous prime is 2056111. The next prime is 2056139. The reversal of 2056138 is 8316502.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1750329 + 305809 = 1323^2 + 553^2 .

It is not an unprimeable number, because it can be changed into a prime (2056139) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10393 + ... + 10588.

2^2056138 is an apocalyptic number.

2056138 is a deficient number, since it is larger than the sum of its proper divisors (1531784).

2056138 is a wasteful number, since it uses less digits than its factorization.

2056138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20997 (or 20990 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 2056138 is about 1433.9239868278. The cubic root of 2056138 is about 127.1600684884.

The spelling of 2056138 in words is "two million, fifty-six thousand, one hundred thirty-eight".