2656138 has 8 divisors (see below), whose sum is σ = 4034880. Its totient is φ = 1311180.

The previous prime is 2656117. The next prime is 2656141. The reversal of 2656138 is 8316562.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8248 + ... + 8563.

It is an arithmetic number, because the mean of its divisors is an integer number (504360).

2^2656138 is an apocalyptic number.

2656138 is a deficient number, since it is larger than the sum of its proper divisors (1378742).

2656138 is a wasteful number, since it uses less digits than its factorization.

2656138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16892.

The product of its digits is 8640, while the sum is 31.

The square root of 2656138 is about 1629.7662409070. The cubic root of 2656138 is about 138.4895099077.

The spelling of 2656138 in words is "two million, six hundred fifty-six thousand, one hundred thirty-eight".