2128936 has 8 divisors (see below), whose sum is σ = 3991770. Its totient is φ = 1064464.

The previous prime is 2128933. The next prime is 2128963. The reversal of 2128936 is 6398212.

It can be written as a sum of positive squares in only one way, i.e., 1976836 + 152100 = 1406^2 + 390^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a plaindrome in base 11.

It is a zygodrome in base 3.

It is a junction number, because it is equal to n+sod(n) for n = 2128898 and 2128907.

It is not an unprimeable number, because it can be changed into a prime (2128933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 133051 + ... + 133066.

2^2128936 is an apocalyptic number.

It is an amenable number.

2128936 is a deficient number, since it is larger than the sum of its proper divisors (1862834).

2128936 is a wasteful number, since it uses less digits than its factorization.

2128936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266123 (or 266119 counting only the distinct ones).

The product of its digits is 5184, while the sum is 31.

The square root of 2128936 is about 1459.0873860054. The cubic root of 2128936 is about 128.6434075502.

The spelling of 2128936 in words is "two million, one hundred twenty-eight thousand, nine hundred thirty-six".