28979802129120 has 192 divisors, whose sum is σ = 91741784150016. Its totient is φ = 7689433835520.

The previous prime is 28979802129119. The next prime is 28979802129151. The reversal of 28979802129120 is 2192120897982.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 189622977 + ... + 189775743.

It is an arithmetic number, because the mean of its divisors is an integer number (477821792448).

Almost surely, 2^{28979802129120} is an apocalyptic number.

28979802129120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28979802129120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45870892075008).

28979802129120 is an abundant number, since it is smaller than the sum of its proper divisors (62761982020896).

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

28979802129120 is a wasteful number, since it uses less digits than its factorization.

28979802129120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154753 (or 154745 counting only the distinct ones).

The product of its (nonzero) digits is 5225472, while the sum is 60.

The spelling of 28979802129120 in words is "twenty-eight trillion, nine hundred seventy-nine billion, eight hundred two million, one hundred twenty-nine thousand, one hundred twenty".