28053602305 has 8 divisors (see below), whose sum is σ = 33878746152. Its totient is φ = 22299932928.

The previous prime is 28053602287. The next prime is 28053602327. The reversal of 28053602305 is 50320635082.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 8659419136 + 19394183169 = 93056^2 + 139263^2 .

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 28053602305 - 2¹⁹ = 28053078017 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17867752 + ... + 17869321.

It is an arithmetic number, because the mean of its divisors is an integer number (4234843269).

It is a Proth number, since it is equal to 13377 ⋅ 2²¹ + 1 and 13377 < 2²¹.

Almost surely, 2^28053602305 is an apocalyptic number.

It is an amenable number.

28053602305 is a deficient number, since it is larger than the sum of its proper divisors (5825143847).

28053602305 is a wasteful number, since it uses less digits than its factorization.

28053602305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35737235.

The product of its (nonzero) digits is 43200, while the sum is 34.

The spelling of 28053602305 in words is "twenty-eight billion, fifty-three million, six hundred two thousand, three hundred five".