2128355 has 8 divisors (see below), whose sum is σ = 2577312. Its totient is φ = 1687168.

The previous prime is 2128333. The next prime is 2128381. The reversal of 2128355 is 5538212.

2128355 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2128355 - 2⁸ = 2128099 is a prime.

It is a Duffinian number.

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 7 ways as a sum of consecutive naturals, for example, 1319 + ... + 2448.

It is an arithmetic number, because the mean of its divisors is an integer number (322164).

2^2128355 is an apocalyptic number.

2128355 is a deficient number, since it is larger than the sum of its proper divisors (448957).

2128355 is a wasteful number, since it uses less digits than its factorization.

2128355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3885.

The product of its digits is 2400, while the sum is 26.

The square root of 2128355 is about 1458.8882753659. Note that the first 3 decimals coincide. The cubic root of 2128355 is about 128.6317039543.

The spelling of 2128355 in words is "two million, one hundred twenty-eight thousand, three hundred fifty-five".