28604726532 has 108 divisors (see below), whose sum is σ = 75253536540. Its totient is φ = 9513345024.

The previous prime is 28604726467. The next prime is 28604726543. The reversal of 28604726532 is 23562740682.

28604726532 is a `hidden beast` number, since 2 + 8 + 604 + 7 + 2 + 6 + 5 + 32 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 23337450756 + 5267275776 = 152766^2 + 72576^2 .

It is a tau number, because it is divible by the number of its divisors (108).

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 15141844 + ... + 15143732.

It is an arithmetic number, because the mean of its divisors is an integer number (696792005).

Almost surely, 2^28604726532 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28604726532, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37626768270).

28604726532 is an abundant number, since it is smaller than the sum of its proper divisors (46648810008).

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

28604726532 is an equidigital number, since it uses as much as digits as its factorization.

28604726532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2494 (or 2471 counting only the distinct ones).

The product of its (nonzero) digits is 967680, while the sum is 45.

The spelling of 28604726532 in words is "twenty-eight billion, six hundred four million, seven hundred twenty-six thousand, five hundred thirty-two".