28717162992 has 240 divisors, whose sum is σ = 97655321088. Its totient is φ = 7699760640.

The previous prime is 28717162987. The next prime is 28717162993. The reversal of 28717162992 is 29926171782.

28717162992 is a `hidden beast` number, since 2 + 8 + 7 + 1 + 7 + 1 + 629 + 9 + 2 = 666.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28717162993) 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 47 ways as a sum of consecutive naturals, for example, 1217067 + ... + 1240437.

Almost surely, 2^28717162992 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28717162992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48827660544).

28717162992 is an abundant number, since it is smaller than the sum of its proper divisors (68938158096).

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

28717162992 is a wasteful number, since it uses less digits than its factorization.

28717162992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23468 (or 23459 counting only the distinct ones).

The product of its digits is 1524096, while the sum is 54.

The spelling of 28717162992 in words is "twenty-eight billion, seven hundred seventeen million, one hundred sixty-two thousand, nine hundred ninety-two".