28357750385 has 16 divisors (see below), whose sum is σ = 34549130880. Its totient is φ = 22340398080.

The previous prime is 28357750373. The next prime is 28357750403. The reversal of 28357750385 is 58305775382.

It is not a de Polignac number, because 28357750385 - 2¹² = 28357746289 is a prime.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 258449 + ... + 351441.

It is an arithmetic number, because the mean of its divisors is an integer number (2159320680).

Almost surely, 2^28357750385 is an apocalyptic number.

It is an amenable number.

28357750385 is a deficient number, since it is larger than the sum of its proper divisors (6191380495).

28357750385 is an equidigital number, since it uses as much as digits as its factorization.

28357750385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93928.

The product of its (nonzero) digits is 7056000, while the sum is 53.

The spelling of 28357750385 in words is "twenty-eight billion, three hundred fifty-seven million, seven hundred fifty thousand, three hundred eighty-five".