28132772329 has 8 divisors (see below), whose sum is σ = 28626257088. Its totient is φ = 27640329360.

The previous prime is 28132772293. The next prime is 28132772399. The reversal of 28132772329 is 92327723182.

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 28132772329 - 2¹³ = 28132764137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28132772399) 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, 205867 + ... + 314080.

It is an arithmetic number, because the mean of its divisors is an integer number (3578282136).

Almost surely, 2^28132772329 is an apocalyptic number.

It is an amenable number.

28132772329 is a deficient number, since it is larger than the sum of its proper divisors (493484759).

28132772329 is an equidigital number, since it uses as much as digits as its factorization.

28132772329 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 520895.

The product of its digits is 508032, while the sum is 46.

The spelling of 28132772329 in words is "twenty-eight billion, one hundred thirty-two million, seven hundred seventy-two thousand, three hundred twenty-nine".