2105672 has 8 divisors (see below), whose sum is σ = 3948150. Its totient is φ = 1052832.

The previous prime is 2105669. The next prime is 2105681. The reversal of 2105672 is 2765012.

It can be written as a sum of positive squares in only one way, i.e., 1999396 + 106276 = 1414^2 + 326^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an alternating number because its digits alternate between even and odd.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 131597 + ... + 131612.

2^2105672 is an apocalyptic number.

It is an amenable number.

2105672 is a deficient number, since it is larger than the sum of its proper divisors (1842478).

2105672 is a wasteful number, since it uses less digits than its factorization.

2105672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 263215 (or 263211 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 23.

The square root of 2105672 is about 1451.0933808684. The cubic root of 2105672 is about 128.1731056323.

The spelling of 2105672 in words is "two million, one hundred five thousand, six hundred seventy-two".