28507903079 has 4 divisors (see below), whose sum is σ = 29278386984. Its totient is φ = 27737419176.

The previous prime is 28507903049. The next prime is 28507903103. The reversal of 28507903079 is 97030970582.

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 28507903079 - 2¹⁶ = 28507837543 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28507903049) 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, 385241897 + ... + 385241970.

It is an arithmetic number, because the mean of its divisors is an integer number (7319596746).

Almost surely, 2^28507903079 is an apocalyptic number.

28507903079 is a deficient number, since it is larger than the sum of its proper divisors (770483905).

28507903079 is an equidigital number, since it uses as much as digits as its factorization.

28507903079 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 770483904.

The product of its (nonzero) digits is 952560, while the sum is 50.

The spelling of 28507903079 in words is "twenty-eight billion, five hundred seven million, nine hundred three thousand, seventy-nine".