28880946309 has 8 divisors (see below), whose sum is σ = 38801882592. Its totient is φ = 19106987120.

The previous prime is 28880946307. The next prime is 28880946323. The reversal of 28880946309 is 90364908882.

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 28880946309 - 2¹ = 28880946307 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28880946301) 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, 36743814 + ... + 36744599.

It is an arithmetic number, because the mean of its divisors is an integer number (4850235324).

Almost surely, 2^28880946309 is an apocalyptic number.

It is an amenable number.

28880946309 is a deficient number, since it is larger than the sum of its proper divisors (9920936283).

28880946309 is a wasteful number, since it uses less digits than its factorization.

28880946309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73488547.

The product of its (nonzero) digits is 5971968, while the sum is 57.

The spelling of 28880946309 in words is "twenty-eight billion, eight hundred eighty million, nine hundred forty-six thousand, three hundred nine".