2545810728 has 32 divisors (see below), whose sum is σ = 6365822400. Its totient is φ = 848430848.

The previous prime is 2545810721. The next prime is 2545810811. The reversal of 2545810728 is 8270185452.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 2545810728.

It is not an unprimeable number, because it can be changed into a prime (2545810721) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 174400 + ... + 188432.

It is an arithmetic number, because the mean of its divisors is an integer number (198931950).

Almost surely, 2^2545810728 is an apocalyptic number.

It is an amenable number.

2545810728 is an abundant number, since it is smaller than the sum of its proper divisors (3820011672).

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

2545810728 is a wasteful number, since it uses less digits than its factorization.

2545810728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21601 (or 21597 counting only the distinct ones).

The product of its (nonzero) digits is 179200, while the sum is 42.

The square root of 2545810728 is about 50456.0276676633. The cubic root of 2545810728 is about 1365.4486448066.

The spelling of 2545810728 in words is "two billion, five hundred forty-five million, eight hundred ten thousand, seven hundred twenty-eight".