2128500372 has 12 divisors (see below), whose sum is σ = 4966500896. Its totient is φ = 709500120.

The previous prime is 2128500349. The next prime is 2128500383. The reversal of 2128500372 is 2730058212.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 88687504 + ... + 88687527.

Almost surely, 2^2128500372 is an apocalyptic number.

It is an amenable number.

2128500372 is an abundant number, since it is smaller than the sum of its proper divisors (2838000524).

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

2128500372 is a wasteful number, since it uses less digits than its factorization.

2128500372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177375038 (or 177375036 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 2128500372 is about 46135.6735292767. The cubic root of 2128500372 is about 1286.3463251062.

Adding to 2128500372 its reverse (2730058212), we get a palindrome (4858558584).

The spelling of 2128500372 in words is "two billion, one hundred twenty-eight million, five hundred thousand, three hundred seventy-two".