2051332728 has 16 divisors (see below), whose sum is σ = 5128331880. Its totient is φ = 683777568.

The previous prime is 2051332721. The next prime is 2051332729. The reversal of 2051332728 is 8272331502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2051332721) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42736075 + ... + 42736122.

Almost surely, 2^2051332728 is an apocalyptic number.

It is an amenable number.

2051332728 is an abundant number, since it is smaller than the sum of its proper divisors (3076999152).

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

2051332728 is a wasteful number, since it uses less digits than its factorization.

2051332728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85472206 (or 85472202 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 33.

The square root of 2051332728 is about 45291.6408181466. The cubic root of 2051332728 is about 1270.6093192872.

The spelling of 2051332728 in words is "two billion, fifty-one million, three hundred thirty-two thousand, seven hundred twenty-eight".