2156938 has 8 divisors (see below), whose sum is σ = 3697632. Its totient is φ = 924396.

The previous prime is 2156897. The next prime is 2156939. The reversal of 2156938 is 8396512.

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

It is a d-powerful number, because it can be written as 2 + 1 + 5 + 6⁶ + 9⁴ + 3⁸ + 8⁷ .

It is not an unprimeable number, because it can be changed into a prime (2156939) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77020 + ... + 77047.

It is an arithmetic number, because the mean of its divisors is an integer number (462204).

2^2156938 is an apocalyptic number.

2156938 is a deficient number, since it is larger than the sum of its proper divisors (1540694).

2156938 is a wasteful number, since it uses less digits than its factorization.

2156938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154076.

The product of its digits is 12960, while the sum is 34.

The square root of 2156938 is about 1468.6517626721. The cubic root of 2156938 is about 129.2049703028.

The spelling of 2156938 in words is "two million, one hundred fifty-six thousand, nine hundred thirty-eight".