28744348619 has 8 divisors (see below), whose sum is σ = 33738540768. Its totient is φ = 23972120640.

The previous prime is 28744348609. The next prime is 28744348631. The reversal of 28744348619 is 91684344782.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28744348619 - 2⁸ = 28744348363 is a prime.

It is a super-2 number, since 2×28744348619² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28744348609) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55490762 + ... + 55491279.

It is an arithmetic number, because the mean of its divisors is an integer number (4217317596).

Almost surely, 2^28744348619 is an apocalyptic number.

28744348619 is a deficient number, since it is larger than the sum of its proper divisors (4994192149).

28744348619 is a wasteful number, since it uses less digits than its factorization.

28744348619 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110982085.

The product of its digits is 9289728, while the sum is 56.

The spelling of 28744348619 in words is "twenty-eight billion, seven hundred forty-four million, three hundred forty-eight thousand, six hundred nineteen".