2129738 has 12 divisors (see below), whose sum is σ = 3459798. Its totient is φ = 982800.

The previous prime is 2129719. The next prime is 2129741. The reversal of 2129738 is 8379212.

2129738 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 1194649 + 935089 = 1093^2 + 967^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2813 + ... + 3488.

2^2129738 is an apocalyptic number.

2129738 is a deficient number, since it is larger than the sum of its proper divisors (1330060).

2129738 is a wasteful number, since it uses less digits than its factorization.

2129738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6329 (or 6316 counting only the distinct ones).

The product of its digits is 6048, while the sum is 32.

The square root of 2129738 is about 1459.3621894513. The cubic root of 2129738 is about 128.6595594465.

The spelling of 2129738 in words is "two million, one hundred twenty-nine thousand, seven hundred thirty-eight".