2487780728 has 16 divisors (see below), whose sum is σ = 4712678880. Its totient is φ = 1231066368.

The previous prime is 2487780683. The next prime is 2487780749. The reversal of 2487780728 is 8270877842.

It is a self number, because there is not a number n which added to its sum of digits gives 2487780728.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1602176 + ... + 1603727.

It is an arithmetic number, because the mean of its divisors is an integer number (294542430).

Almost surely, 2^2487780728 is an apocalyptic number.

It is an amenable number.

2487780728 is a deficient number, since it is larger than the sum of its proper divisors (2224898152).

2487780728 is a wasteful number, since it uses less digits than its factorization.

2487780728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3206006 (or 3206002 counting only the distinct ones).

The product of its (nonzero) digits is 2809856, while the sum is 53.

The square root of 2487780728 is about 49877.6576033799. The cubic root of 2487780728 is about 1354.9939820814.

The spelling of 2487780728 in words is "two billion, four hundred eighty-seven million, seven hundred eighty thousand, seven hundred twenty-eight".