2125864 has 16 divisors (see below), whose sum is σ = 4292820. Its totient is φ = 981120.

The previous prime is 2125847. The next prime is 2125873. The reversal of 2125864 is 4685212.

It can be written as a sum of positive squares in 2 ways, for example, as 2125764 + 100 = 1458^2 + 10^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10117 + ... + 10324.

2^2125864 is an apocalyptic number.

It is an amenable number.

2125864 is an abundant number, since it is smaller than the sum of its proper divisors (2166956).

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

2125864 is a wasteful number, since it uses less digits than its factorization.

2125864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20460 (or 20456 counting only the distinct ones).

The product of its digits is 3840, while the sum is 28.

The square root of 2125864 is about 1458.0342931495. The cubic root of 2125864 is about 128.5815013860.

The spelling of 2125864 in words is "two million, one hundred twenty-five thousand, eight hundred sixty-four".