28059145560 has 96 divisors (see below), whose sum is σ = 91352598480. Its totient is φ = 7469280000.

The previous prime is 28059145553. The next prime is 28059145579. The reversal of 28059145560 is 6554195082.

28059145560 is a `hidden beast` number, since 2 + 8 + 0 + 5 + 91 + 4 + 556 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 137310 + ... + 273810.

Almost surely, 2^28059145560 is an apocalyptic number.

28059145560 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 28059145560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45676299240).

28059145560 is an abundant number, since it is smaller than the sum of its proper divisors (63293452920).

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

28059145560 is a wasteful number, since it uses less digits than its factorization.

28059145560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137089 (or 137082 counting only the distinct ones).

The product of its (nonzero) digits is 432000, while the sum is 45.

The spelling of 28059145560 in words is "twenty-eight billion, fifty-nine million, one hundred forty-five thousand, five hundred sixty".