28134732999 has 8 divisors (see below), whose sum is σ = 39487344640. Its totient is φ = 17769305016.

The previous prime is 28134732949. The next prime is 28134733043. The reversal of 28134732999 is 99923743182.

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

It is not a de Polignac number, because 28134732999 - 2¹⁷ = 28134601927 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (57), and also a Moran number because the ratio is a prime number: 493591807 = 28134732999 / (2 + 8 + 1 + 3 + 4 + 7 + 3 + 2 + 9 + 9 + 9).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28134732949) 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, 246795847 + ... + 246795960.

It is an arithmetic number, because the mean of its divisors is an integer number (4935918080).

Almost surely, 2^28134732999 is an apocalyptic number.

28134732999 is a deficient number, since it is larger than the sum of its proper divisors (11352611641).

28134732999 is a wasteful number, since it uses less digits than its factorization.

28134732999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 493591829.

The product of its digits is 5878656, while the sum is 57.

The spelling of 28134732999 in words is "twenty-eight billion, one hundred thirty-four million, seven hundred thirty-two thousand, nine hundred ninety-nine".