28338605201 has 4 divisors (see below), whose sum is σ = 28340012004. Its totient is φ = 28337198400.

The previous prime is 28338605171. The next prime is 28338605231. The reversal of 28338605201 is 10250683382.

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

It is an interprime number because it is at equal distance from previous prime (28338605171) and next prime (28338605231).

It can be written as a sum of positive squares in 2 ways, for example, as 18933484801 + 9405120400 = 137599^2 + 96980^2 .

It is a cyclic number.

It is not a de Polignac number, because 28338605201 - 2⁶ = 28338605137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28338605231) 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, 672740 + ... + 713621.

It is an arithmetic number, because the mean of its divisors is an integer number (7085003001).

Almost surely, 2^28338605201 is an apocalyptic number.

It is an amenable number.

28338605201 is a deficient number, since it is larger than the sum of its proper divisors (1406803).

28338605201 is a wasteful number, since it uses less digits than its factorization.

28338605201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1406802.

The product of its (nonzero) digits is 69120, while the sum is 38.

The spelling of 28338605201 in words is "twenty-eight billion, three hundred thirty-eight million, six hundred five thousand, two hundred one".