28994028369 has 8 divisors (see below), whose sum is σ = 39124472352. Its totient is φ = 19096468320.

The previous prime is 28994028361. The next prime is 28994028379. The reversal of 28994028369 is 96382049982.

It is a happy number.

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

It is not a de Polignac number, because 28994028369 - 2³ = 28994028361 is a prime.

It is a super-3 number, since 3×28994028369³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (28994028361) 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, 58220692 + ... + 58221189.

It is an arithmetic number, because the mean of its divisors is an integer number (4890559044).

Almost surely, 2^28994028369 is an apocalyptic number.

It is an amenable number.

28994028369 is a deficient number, since it is larger than the sum of its proper divisors (10130443983).

28994028369 is a wasteful number, since it uses less digits than its factorization.

28994028369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116441967.

The product of its (nonzero) digits is 13436928, while the sum is 60.

The spelling of 28994028369 in words is "twenty-eight billion, nine hundred ninety-four million, twenty-eight thousand, three hundred sixty-nine".