2129646 has 32 divisors (see below), whose sum is σ = 4481568. Its totient is φ = 673920.

The previous prime is 2129627. The next prime is 2129671. The reversal of 2129646 is 6469212.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11676 + ... + 11856.

It is an arithmetic number, because the mean of its divisors is an integer number (140049).

2^2129646 is an apocalyptic number.

2129646 is an abundant number, since it is smaller than the sum of its proper divisors (2351922).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2129646 is a wasteful number, since it uses less digits than its factorization.

2129646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276.

The product of its digits is 5184, while the sum is 30.

The square root of 2129646 is about 1459.3306684916. The cubic root of 2129646 is about 128.6577068164.

It can be divided in two parts, 2129 and 646, that added together give a triangular number (2775 = T₇₄).

The spelling of 2129646 in words is "two million, one hundred twenty-nine thousand, six hundred forty-six".