28538293783 has 4 divisors (see below), whose sum is σ = 28614804328. Its totient is φ = 28461783240.

The previous prime is 28538293757. The next prime is 28538293799. The reversal of 28538293783 is 38739283582.

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 28538293783 - 2⁹ = 28538293271 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 (28538293283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38254713 + ... + 38255458.

It is an arithmetic number, because the mean of its divisors is an integer number (7153701082).

Almost surely, 2^28538293783 is an apocalyptic number.

28538293783 is a deficient number, since it is larger than the sum of its proper divisors (76510545).

28538293783 is an equidigital number, since it uses as much as digits as its factorization.

28538293783 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76510544.

The product of its digits is 17418240, while the sum is 58.

The spelling of 28538293783 in words is "twenty-eight billion, five hundred thirty-eight million, two hundred ninety-three thousand, seven hundred eighty-three".