28587428712 has 32 divisors (see below), whose sum is σ = 79409524800. Its totient is φ = 9529142832.

The previous prime is 28587428707. The next prime is 28587428713. The reversal of 28587428712 is 21782478582.

28587428712 is a `hidden beast` number, since 2 + 8 + 587 + 42 + 8 + 7 + 12 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (28587428713) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66174388 + ... + 66174819.

It is an arithmetic number, because the mean of its divisors is an integer number (2481547650).

Almost surely, 2^28587428712 is an apocalyptic number.

It is an amenable number.

28587428712 is an abundant number, since it is smaller than the sum of its proper divisors (50822096088).

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

28587428712 is a wasteful number, since it uses less digits than its factorization.

28587428712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132349222 (or 132349212 counting only the distinct ones).

The product of its digits is 4014080, while the sum is 54.

The spelling of 28587428712 in words is "twenty-eight billion, five hundred eighty-seven million, four hundred twenty-eight thousand, seven hundred twelve".