28763045903 has 4 divisors (see below), whose sum is σ = 29540425560. Its totient is φ = 27985666248.

The previous prime is 28763045897. The next prime is 28763045957. The reversal of 28763045903 is 30954036782.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 28763045903 - 2¹⁰ = 28763044879 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28763045803) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 388689773 + ... + 388689846.

It is an arithmetic number, because the mean of its divisors is an integer number (7385106390).

Almost surely, 2^28763045903 is an apocalyptic number.

28763045903 is a deficient number, since it is larger than the sum of its proper divisors (777379657).

28763045903 is an equidigital number, since it uses as much as digits as its factorization.

28763045903 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 777379656.

The product of its (nonzero) digits is 1088640, while the sum is 47.

The spelling of 28763045903 in words is "twenty-eight billion, seven hundred sixty-three million, forty-five thousand, nine hundred three".