28806337541 has 4 divisors (see below), whose sum is σ = 28836005184. Its totient is φ = 28776669900.

The previous prime is 28806337523. The next prime is 28806337577. The reversal of 28806337541 is 14573360882.

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: 14573360882 = 2 ⋅7286680441.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28806337541 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28806337591) 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, 14832365 + ... + 14834306.

It is an arithmetic number, because the mean of its divisors is an integer number (7209001296).

Almost surely, 2^28806337541 is an apocalyptic number.

It is an amenable number.

28806337541 is a deficient number, since it is larger than the sum of its proper divisors (29667643).

28806337541 is an equidigital number, since it uses as much as digits as its factorization.

28806337541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29667642.

The product of its (nonzero) digits is 967680, while the sum is 47.

The spelling of 28806337541 in words is "twenty-eight billion, eight hundred six million, three hundred thirty-seven thousand, five hundred forty-one".