28244542775 has 12 divisors (see below), whose sum is σ = 35064031800. Its totient is φ = 22569312480.

The previous prime is 28244542691. The next prime is 28244542783. The reversal of 28244542775 is 57724544282.

It is not a de Polignac number, because 28244542775 - 2²⁰ = 28243494199 is a prime.

It is a hoax number, since the sum of its digits (50) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 636140 + ... + 679089.

It is an arithmetic number, because the mean of its divisors is an integer number (2922002650).

Almost surely, 2^28244542775 is an apocalyptic number.

28244542775 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

28244542775 is a deficient number, since it is larger than the sum of its proper divisors (6819489025).

28244542775 is a wasteful number, since it uses less digits than its factorization.

28244542775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1316098 (or 1316093 counting only the distinct ones).

The product of its digits is 5017600, while the sum is 50.

The spelling of 28244542775 in words is "twenty-eight billion, two hundred forty-four million, five hundred forty-two thousand, seven hundred seventy-five".