2106428 has 12 divisors (see below), whose sum is σ = 3738672. Its totient is φ = 1038240.

The previous prime is 2106427. The next prime is 2106431. The reversal of 2106428 is 8246012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2106421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3425 + ... + 3992.

It is an arithmetic number, because the mean of its divisors is an integer number (311556).

2^2106428 is an apocalyptic number.

It is an amenable number.

2106428 is a deficient number, since it is larger than the sum of its proper divisors (1632244).

2106428 is a wasteful number, since it uses less digits than its factorization.

2106428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7492 (or 7490 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 2106428 is about 1451.3538507201. The cubic root of 2106428 is about 128.1884431387.

The spelling of 2106428 in words is "two million, one hundred six thousand, four hundred twenty-eight".