2128964 has 6 divisors (see below), whose sum is σ = 3725694. Its totient is φ = 1064480.

The previous prime is 2128963. The next prime is 2128991. The reversal of 2128964 is 4698212.

It can be written as a sum of positive squares in only one way, i.e., 1144900 + 984064 = 1070^2 + 992^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2128964.

It is not an unprimeable number, because it can be changed into a prime (2128963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 266117 + ... + 266124.

It is an arithmetic number, because the mean of its divisors is an integer number (620949).

2^2128964 is an apocalyptic number.

It is an amenable number.

2128964 is a deficient number, since it is larger than the sum of its proper divisors (1596730).

2128964 is a wasteful number, since it uses less digits than its factorization.

2128964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 532245 (or 532243 counting only the distinct ones).

The product of its digits is 6912, while the sum is 32.

The square root of 2128964 is about 1459.0969810126. The cubic root of 2128964 is about 128.6439715252.

The spelling of 2128964 in words is "two million, one hundred twenty-eight thousand, nine hundred sixty-four".