28367652857 has 4 divisors (see below), whose sum is σ = 28632771216. Its totient is φ = 28102534500.

The previous prime is 28367652847. The next prime is 28367652881. The reversal of 28367652857 is 75825676382.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 75825676382 = 2 ⋅37912838191.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28367652857 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28367652796 and 28367652805.

It is not an unprimeable number, because it can be changed into a prime (28367652847) 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 3 ways as a sum of consecutive naturals, for example, 132559019 + ... + 132559232.

It is an arithmetic number, because the mean of its divisors is an integer number (7158192804).

Almost surely, 2^28367652857 is an apocalyptic number.

It is an amenable number.

28367652857 is a deficient number, since it is larger than the sum of its proper divisors (265118359).

28367652857 is a wasteful number, since it uses less digits than its factorization.

28367652857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265118358.

The product of its digits is 33868800, while the sum is 59.

The spelling of 28367652857 in words is "twenty-eight billion, three hundred sixty-seven million, six hundred fifty-two thousand, eight hundred fifty-seven".