28003244766 has 16 divisors (see below), whose sum is σ = 64007416704. Its totient is φ = 8000927064.

The previous prime is 28003244681. The next prime is 28003244771. The reversal of 28003244766 is 66744230082.

It is a Harshad number since it is a multiple of its sum of digits (42), and also a Moran number because the ratio is a prime number: 666743923 = 28003244766 / (2 + 8 + 0 + 0 + 3 + 2 + 4 + 4 + 7 + 6 + 6).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 333371920 + ... + 333372003.

It is an arithmetic number, because the mean of its divisors is an integer number (4000463544).

Almost surely, 2^28003244766 is an apocalyptic number.

28003244766 is an abundant number, since it is smaller than the sum of its proper divisors (36004171938).

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

28003244766 is a wasteful number, since it uses less digits than its factorization.

28003244766 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 666743935.

The product of its (nonzero) digits is 387072, while the sum is 42.

The spelling of 28003244766 in words is "twenty-eight billion, three million, two hundred forty-four thousand, seven hundred sixty-six".