28604449512 has 112 divisors (see below), whose sum is σ = 83186590500. Its totient is φ = 9205975296.

The previous prime is 28604449477. The next prime is 28604449553. The reversal of 28604449512 is 21594440682.

It is a happy number.

28604449512 is a `hidden beast` number, since 28 + 604 + 4 + 4 + 9 + 5 + 12 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 26789178276 + 1815271236 = 163674^2 + 42606^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 84564 + ... + 253692.

Almost surely, 2^28604449512 is an apocalyptic number.

It is a pronic number, being equal to 169128×169129.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28604449512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41593295250).

28604449512 is an abundant number, since it is smaller than the sum of its proper divisors (54582140988).

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

28604449512 is a wasteful number, since it uses less digits than its factorization.

28604449512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169182 (or 169163 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 45.

The spelling of 28604449512 in words is "twenty-eight billion, six hundred four million, four hundred forty-nine thousand, five hundred twelve".