28816729344 has 144 divisors (see below), whose sum is σ = 91771512000. Its totient is φ = 8866658304.

The previous prime is 28816729343. The next prime is 28816729349. The reversal of 28816729344 is 44392761882.

28816729344 is a `hidden beast` number, since 288 + 16 + 7 + 2 + 9 + 344 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28816729343) 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, 70494 + ... + 250205.

Almost surely, 2^28816729344 is an apocalyptic number.

28816729344 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

28816729344 is an abundant number, since it is smaller than the sum of its proper divisors (62954782656).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28816729344 is a wasteful number, since it uses less digits than its factorization.

28816729344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 320737 (or 320717 counting only the distinct ones).

The product of its digits is 4644864, while the sum is 54.

The spelling of 28816729344 in words is "twenty-eight billion, eight hundred sixteen million, seven hundred twenty-nine thousand, three hundred forty-four".