28540234855 has 16 divisors (see below), whose sum is σ = 37375072128. Its totient is φ = 20749140000.

The previous prime is 28540234843. The next prime is 28540234859. The reversal of 28540234855 is 55843204582.

It is not a de Polignac number, because 28540234855 - 2²⁹ = 28003363943 is a prime.

It is a super-3 number, since 3×28540234855³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28540234859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 65800 + ... + 247810.

It is an arithmetic number, because the mean of its divisors is an integer number (2335942008).

Almost surely, 2^28540234855 is an apocalyptic number.

28540234855 is a deficient number, since it is larger than the sum of its proper divisors (8834837273).

28540234855 is a wasteful number, since it uses less digits than its factorization.

28540234855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184878.

The product of its (nonzero) digits is 1536000, while the sum is 46.

The spelling of 28540234855 in words is "twenty-eight billion, five hundred forty million, two hundred thirty-four thousand, eight hundred fifty-five".