2128851 has 12 divisors (see below), whose sum is σ = 3133728. Its totient is φ = 1392144.

The previous prime is 2128849. The next prime is 2128871. The reversal of 2128851 is 1588212.

It is not a de Polignac number, because 2128851 - 2¹ = 2128849 is a prime.

It is a plaindrome in base 11.

It is not an unprimeable number, because it can be changed into a prime (2128831) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1755 + ... + 2708.

It is an arithmetic number, because the mean of its divisors is an integer number (261144).

2^2128851 is an apocalyptic number.

2128851 is a deficient number, since it is larger than the sum of its proper divisors (1004877).

2128851 is a wasteful number, since it uses less digits than its factorization.

2128851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4522 (or 4519 counting only the distinct ones).

The product of its digits is 1280, while the sum is 27.

The square root of 2128851 is about 1459.0582579184. The cubic root of 2128851 is about 128.6416954532.

The spelling of 2128851 in words is "two million, one hundred twenty-eight thousand, eight hundred fifty-one".