28960921329 has 8 divisors (see below), whose sum is σ = 39079797792. Its totient is φ = 19074662880.

The previous prime is 28960921321. The next prime is 28960921333. The reversal of 28960921329 is 92312906982.

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 28960921329 - 2³ = 28960921321 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28960921321) 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, 58154212 + ... + 58154709.

It is an arithmetic number, because the mean of its divisors is an integer number (4884974724).

Almost surely, 2^28960921329 is an apocalyptic number.

It is an amenable number.

28960921329 is a deficient number, since it is larger than the sum of its proper divisors (10118876463).

28960921329 is a wasteful number, since it uses less digits than its factorization.

28960921329 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116309007.

The product of its (nonzero) digits is 839808, while the sum is 51.

The spelling of 28960921329 in words is "twenty-eight billion, nine hundred sixty million, nine hundred twenty-one thousand, three hundred twenty-nine".