2129928 has 16 divisors (see below), whose sum is σ = 5324880. Its totient is φ = 709968.

The previous prime is 2129903. The next prime is 2129951. The reversal of 2129928 is 8299212.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (3) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44350 + ... + 44397.

It is an arithmetic number, because the mean of its divisors is an integer number (332805).

2^2129928 is an apocalyptic number.

It is an amenable number.

2129928 is an abundant number, since it is smaller than the sum of its proper divisors (3194952).

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

2129928 is a wasteful number, since it uses less digits than its factorization.

2129928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88756 (or 88752 counting only the distinct ones).

The product of its digits is 5184, while the sum is 33.

The square root of 2129928 is about 1459.4272849306. The cubic root of 2129928 is about 128.6633853614.

The spelling of 2129928 in words is "two million, one hundred twenty-nine thousand, nine hundred twenty-eight".