28445326775 has 6 divisors (see below), whose sum is σ = 35272205232. Its totient is φ = 22756261400.

The previous prime is 28445326729. The next prime is 28445326781. The reversal of 28445326775 is 57762354482.

It is not a de Polignac number, because 28445326775 - 2⁶ = 28445326711 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 5 ways as a sum of consecutive naturals, for example, 568906511 + ... + 568906560.

It is an arithmetic number, because the mean of its divisors is an integer number (5878700872).

Almost surely, 2^28445326775 is an apocalyptic number.

28445326775 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

28445326775 is a deficient number, since it is larger than the sum of its proper divisors (6826878457).

28445326775 is a wasteful number, since it uses less digits than its factorization.

28445326775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1137813081 (or 1137813076 counting only the distinct ones).

The product of its digits is 11289600, while the sum is 53.

The spelling of 28445326775 in words is "twenty-eight billion, four hundred forty-five million, three hundred twenty-six thousand, seven hundred seventy-five".