28587523748 has 72 divisors (see below), whose sum is σ = 62312324760. Its totient is φ = 11401420800.

The previous prime is 28587523739. The next prime is 28587523777. The reversal of 28587523748 is 84732578582.

It can be written as a sum of positive squares in 4 ways, for example, as 153664 + 28587370084 = 392^2 + 169078^2 .

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, 248348 + ... + 344748.

It is an arithmetic number, because the mean of its divisors is an integer number (865448955).

Almost surely, 2^28587523748 is an apocalyptic number.

28587523748 is a gapful number since it is divisible by the number (28) 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 28587523748, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31156162380).

28587523748 is an abundant number, since it is smaller than the sum of its proper divisors (33724801012).

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

28587523748 is a wasteful number, since it uses less digits than its factorization.

28587523748 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96525 (or 96516 counting only the distinct ones).

The product of its digits is 30105600, while the sum is 59.

The spelling of 28587523748 in words is "twenty-eight billion, five hundred eighty-seven million, five hundred twenty-three thousand, seven hundred forty-eight".