28859546880 has 432 divisors, whose sum is σ = 106500576000. Its totient is φ = 7194230784.

The previous prime is 28859546873. The next prime is 28859546887. The reversal of 28859546880 is 8864595882.

28859546880 is a `hidden beast` number, since 2 + 8 + 8 + 5 + 9 + 546 + 8 + 80 = 666.

It is an interprime number because it is at equal distance from previous prime (28859546873) and next prime (28859546887).

It is a super-2 number, since 2×28859546880² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28859546887) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 17290686 + ... + 17292354.

Almost surely, 2^28859546880 is an apocalyptic number.

28859546880 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 28859546880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (53250288000).

28859546880 is an abundant number, since it is smaller than the sum of its proper divisors (77641029120).

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

28859546880 is a wasteful number, since it uses less digits than its factorization.

28859546880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1794 (or 1777 counting only the distinct ones).

The product of its (nonzero) digits is 44236800, while the sum is 63.

The spelling of 28859546880 in words is "twenty-eight billion, eight hundred fifty-nine million, five hundred forty-six thousand, eight hundred eighty".