28784326575 has 24 divisors (see below), whose sum is σ = 47611789456. Its totient is φ = 15344640000.

The previous prime is 28784326567. The next prime is 28784326589. The reversal of 28784326575 is 57562348782.

It is not a de Polignac number, because 28784326575 - 2³ = 28784326567 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 80175 + ... + 252975.

Almost surely, 2^28784326575 is an apocalyptic number.

28784326575 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

28784326575 is a deficient number, since it is larger than the sum of its proper divisors (18827462881).

28784326575 is a wasteful number, since it uses less digits than its factorization.

28784326575 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175035 (or 175030 counting only the distinct ones).

The product of its digits is 22579200, while the sum is 57.

The spelling of 28784326575 in words is "twenty-eight billion, seven hundred eighty-four million, three hundred twenty-six thousand, five hundred seventy-five".