28707724039104 has 168 divisors, whose sum is σ = 90337769456688. Its totient is φ = 8643900395520.

The previous prime is 28707724039067. The next prime is 28707724039109. The reversal of 28707724039104 is 40193042770782.

28707724039104 is a `hidden beast` number, since 2 + 8 + 7 + 0 + 7 + 7 + 240 + 391 + 0 + 4 = 666.

It is a super-2 number, since 2×28707724039104² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28707724039109) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13434837 + ... + 15424340.

Almost surely, 2^{28707724039104} is an apocalyptic number.

28707724039104 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

28707724039104 is an abundant number, since it is smaller than the sum of its proper divisors (61630045417584).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28707724039104 is a wasteful number, since it uses less digits than its factorization.

28707724039104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28859363 (or 28859350 counting only the distinct ones).

The product of its (nonzero) digits is 4741632, while the sum is 54.

The spelling of 28707724039104 in words is "twenty-eight trillion, seven hundred seven billion, seven hundred twenty-four million, thirty-nine thousand, one hundred four".