28356057353 has 4 divisors (see below), whose sum is σ = 30537292548. Its totient is φ = 26174822160.

The previous prime is 28356057347. The next prime is 28356057371. The reversal of 28356057353 is 35375065382.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5193652489 + 23162404864 = 72067^2 + 152192^2 .

It is a cyclic number.

It is not a de Polignac number, because 28356057353 - 2¹⁰ = 28356056329 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 28356057298 and 28356057307.

It is not an unprimeable number, because it can be changed into a prime (28356057313) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1090617578 + ... + 1090617603.

It is an arithmetic number, because the mean of its divisors is an integer number (7634323137).

Almost surely, 2^28356057353 is an apocalyptic number.

It is an amenable number.

28356057353 is a deficient number, since it is larger than the sum of its proper divisors (2181235195).

28356057353 is a wasteful number, since it uses less digits than its factorization.

28356057353 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2181235194.

The product of its (nonzero) digits is 2268000, while the sum is 47.

The spelling of 28356057353 in words is "twenty-eight billion, three hundred fifty-six million, fifty-seven thousand, three hundred fifty-three".