28805262163560 has 192 divisors, whose sum is σ = 95393362942800. Its totient is φ = 7535688855552.

The previous prime is 28805262163487. The next prime is 28805262163567. The reversal of 28805262163560 is 6536126250882.

28805262163560 is a `hidden beast` number, since 2 + 8 + 8 + 0 + 5 + 2 + 62 + 16 + 3 + 560 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 15295623765444 + 13509638398116 = 3910962^2 + 3675546^2 .

It is a super-2 number, since 2×28805262163560² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 28805262163497 and 28805262163506.

It is not an unprimeable number, because it can be changed into a prime (28805262163567) 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, 196698846 + ... + 196845234.

Almost surely, 2^{28805262163560} is an apocalyptic number.

28805262163560 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 28805262163560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47696681471400).

28805262163560 is an abundant number, since it is smaller than the sum of its proper divisors (66588100779240).

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

28805262163560 is a wasteful number, since it uses less digits than its factorization.

28805262163560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156772 (or 156765 counting only the distinct ones).

The product of its (nonzero) digits is 8294400, while the sum is 54.

The spelling of 28805262163560 in words is "twenty-eight trillion, eight hundred five billion, two hundred sixty-two million, one hundred sixty-three thousand, five hundred sixty".