28338547241 has 4 divisors (see below), whose sum is σ = 28340889684. Its totient is φ = 28336204800.

The previous prime is 28338547231. The next prime is 28338547247. The reversal of 28338547241 is 14274583382.

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 18633342016 + 9705205225 = 136504^2 + 98515^2 .

It is a cyclic number.

It is not a de Polignac number, because 28338547241 - 2³⁴ = 11158678057 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (28338547247) 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, 1152980 + ... + 1177301.

It is an arithmetic number, because the mean of its divisors is an integer number (7085222421).

Almost surely, 2^28338547241 is an apocalyptic number.

It is an amenable number.

28338547241 is a deficient number, since it is larger than the sum of its proper divisors (2342443).

28338547241 is a wasteful number, since it uses less digits than its factorization.

28338547241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2342442.

The product of its digits is 1290240, while the sum is 47.

The spelling of 28338547241 in words is "twenty-eight billion, three hundred thirty-eight million, five hundred forty-seven thousand, two hundred forty-one".