28380052297 has 24 divisors (see below), whose sum is σ = 32828860800. Its totient is φ = 24432097536.

The previous prime is 28380052271. The next prime is 28380052301. The reversal of 28380052297 is 79225008382.

It is not a de Polignac number, because 28380052297 - 2¹¹ = 28380050249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28380052237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 70128 + ... + 248350.

It is an arithmetic number, because the mean of its divisors is an integer number (1367869200).

Almost surely, 2^28380052297 is an apocalyptic number.

It is an amenable number.

28380052297 is a deficient number, since it is larger than the sum of its proper divisors (4448808503).

28380052297 is a wasteful number, since it uses less digits than its factorization.

28380052297 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178305 (or 178288 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 46.

The spelling of 28380052297 in words is "twenty-eight billion, three hundred eighty million, fifty-two thousand, two hundred ninety-seven".