28778707003 has 8 divisors (see below), whose sum is σ = 30497201280. Its totient is φ = 27108621120.

The previous prime is 28778706977. The next prime is 28778707007. The reversal of 28778707003 is 30070787782.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28778707003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28778707007) 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, 12100875 + ... + 12103252.

It is an arithmetic number, because the mean of its divisors is an integer number (3812150160).

Almost surely, 2^28778707003 is an apocalyptic number.

28778707003 is a deficient number, since it is larger than the sum of its proper divisors (1718494277).

28778707003 is a wasteful number, since it uses less digits than its factorization.

28778707003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24204197.

The product of its (nonzero) digits is 921984, while the sum is 49.

The spelling of 28778707003 in words is "twenty-eight billion, seven hundred seventy-eight million, seven hundred seven thousand, three".