2156876 has 6 divisors (see below), whose sum is σ = 3774540. Its totient is φ = 1078436.

The previous prime is 2156873. The next prime is 2156879. The reversal of 2156876 is 6786512.

It is an interprime number because it is at equal distance from previous prime (2156873) and next prime (2156879).

It is a super-2 number, since 2×2156876² = 9304228158752, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2156873) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 269606 + ... + 269613.

It is an arithmetic number, because the mean of its divisors is an integer number (629090).

2^2156876 is an apocalyptic number.

It is an amenable number.

2156876 is a deficient number, since it is larger than the sum of its proper divisors (1617664).

2156876 is a wasteful number, since it uses less digits than its factorization.

2156876 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 539223 (or 539221 counting only the distinct ones).

The product of its digits is 20160, while the sum is 35.

The square root of 2156876 is about 1468.6306547257. The cubic root of 2156876 is about 129.2037323156.

It can be divided in two parts, 215 and 6876, that multiplied together give a triangular number (1478340 = T₁₇₁₉).

The spelling of 2156876 in words is "two million, one hundred fifty-six thousand, eight hundred seventy-six".