28744345743 has 12 divisors (see below), whose sum is σ = 38359990728. Its totient is φ = 19145812800.

The previous prime is 28744345699. The next prime is 28744345771. The reversal of 28744345743 is 34754344782.

It is a de Polignac number, because none of the positive numbers 2^k-28744345743 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28744345793) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7764793 + ... + 7768493.

It is an arithmetic number, because the mean of its divisors is an integer number (3196665894).

Almost surely, 2^28744345743 is an apocalyptic number.

28744345743 is a deficient number, since it is larger than the sum of its proper divisors (9615644985).

28744345743 is an frugal number, since it uses more digits than its factorization.

28744345743 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6922 (or 5313 counting only the distinct ones).

The product of its digits is 9031680, while the sum is 51.

The spelling of 28744345743 in words is "twenty-eight billion, seven hundred forty-four million, three hundred forty-five thousand, seven hundred forty-three".