28539400834634 has 16 divisors (see below), whose sum is σ = 43095573763200. Its totient is φ = 14174222600400.

The previous prime is 28539400834561. The next prime is 28539400834639. The reversal of 28539400834634 is 43643800493582.

It is a super-3 number, since 3×28539400834634³ (a number of 41 digits) contains 333 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (28539400834639) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1146107 + ... + 7641489.

It is an arithmetic number, because the mean of its divisors is an integer number (2693473360200).

Almost surely, 2^{28539400834634} is an apocalyptic number.

28539400834634 is a deficient number, since it is larger than the sum of its proper divisors (14556172928566).

28539400834634 is a wasteful number, since it uses less digits than its factorization.

28539400834634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6510085.

The product of its (nonzero) digits is 59719680, while the sum is 59.

The spelling of 28539400834634 in words is "twenty-eight trillion, five hundred thirty-nine billion, four hundred million, eight hundred thirty-four thousand, six hundred thirty-four".