2752021728 has 36 divisors (see below), whose sum is σ = 7826062608. Its totient is φ = 917340480.

The previous prime is 2752021687. The next prime is 2752021739. The reversal of 2752021728 is 8271202572.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 2752021692 and 2752021701.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4777528 + ... + 4778103.

It is an arithmetic number, because the mean of its divisors is an integer number (217390628).

Almost surely, 2^2752021728 is an apocalyptic number.

It is an amenable number.

2752021728 is an abundant number, since it is smaller than the sum of its proper divisors (5074040880).

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

2752021728 is a wasteful number, since it uses less digits than its factorization.

2752021728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9555647 (or 9555636 counting only the distinct ones).

The product of its (nonzero) digits is 31360, while the sum is 36.

The square root of 2752021728 is about 52459.7152870658. The cubic root of 2752021728 is about 1401.3629122183.

The spelling of 2752021728 in words is "two billion, seven hundred fifty-two million, twenty-one thousand, seven hundred twenty-eight".