28343367385 has 16 divisors (see below), whose sum is σ = 36045997056. Its totient is φ = 21321186048.

The previous prime is 28343367359. The next prime is 28343367427. The reversal of 28343367385 is 58376334382.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28343367385 is a prime.

It is a super-3 number, since 3×28343367385³ (a number of 32 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60987 + ... + 245776.

It is an arithmetic number, because the mean of its divisors is an integer number (2252874816).

Almost surely, 2^28343367385 is an apocalyptic number.

It is an amenable number.

28343367385 is a deficient number, since it is larger than the sum of its proper divisors (7702629671).

28343367385 is a wasteful number, since it uses less digits than its factorization.

28343367385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 307872.

The product of its digits is 8709120, while the sum is 52.

The spelling of 28343367385 in words is "twenty-eight billion, three hundred forty-three million, three hundred sixty-seven thousand, three hundred eighty-five".