28520501760 has 720 divisors, whose sum is σ = 108959026176. Its totient is φ = 7148445696.

The previous prime is 28520501743. The next prime is 28520501761. The reversal of 28520501760 is 6710502582.

It is a happy number.

28520501760 is a `hidden beast` number, since 2 + 85 + 2 + 0 + 501 + 76 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (720).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (28520501761) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 224570817 + ... + 224570943.

Almost surely, 2^28520501760 is an apocalyptic number.

28520501760 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 28520501760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54479513088).

28520501760 is an abundant number, since it is smaller than the sum of its proper divisors (80438524416).

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

28520501760 is an equidigital number, since it uses as much as digits as its factorization.

28520501760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203 (or 156 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 36.

The spelling of 28520501760 in words is "twenty-eight billion, five hundred twenty million, five hundred one thousand, seven hundred sixty".