2801816728 has 16 divisors (see below), whose sum is σ = 5254903080. Its totient is φ = 1400509248.

The previous prime is 2801816707. The next prime is 2801816753. The reversal of 2801816728 is 8276181082.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18925 + ... + 77212.

Almost surely, 2^2801816728 is an apocalyptic number.

It is an amenable number.

2801816728 is a deficient number, since it is larger than the sum of its proper divisors (2453086352).

2801816728 is a wasteful number, since it uses less digits than its factorization.

2801816728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99786 (or 99782 counting only the distinct ones).

The product of its (nonzero) digits is 86016, while the sum is 43.

The square root of 2801816728 is about 52932.1899036872. The cubic root of 2801816728 is about 1409.7645144350.

The spelling of 2801816728 in words is "two billion, eight hundred one million, eight hundred sixteen thousand, seven hundred twenty-eight".