28744089441 has 16 divisors (see below), whose sum is σ = 39192759360. Its totient is φ = 18732928320.

The previous prime is 28744089403. The next prime is 28744089457. The reversal of 28744089441 is 14498044782.

It is not a de Polignac number, because 28744089441 - 2³¹ = 26596605793 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28744089541) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 451986 + ... + 511643.

It is an arithmetic number, because the mean of its divisors is an integer number (2449547460).

Almost surely, 2^28744089441 is an apocalyptic number.

It is an amenable number.

28744089441 is a deficient number, since it is larger than the sum of its proper divisors (10448669919).

28744089441 is a wasteful number, since it uses less digits than its factorization.

28744089441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 963856.

The product of its (nonzero) digits is 2064384, while the sum is 51.

The spelling of 28744089441 in words is "twenty-eight billion, seven hundred forty-four million, eighty-nine thousand, four hundred forty-one".