28870087744 has 63 divisors (see below), whose sum is σ = 58340942373. Its totient is φ = 14174738688.

The previous prime is 28870087723. The next prime is 28870087751. The reversal of 28870087744 is 44778007882.

The square root of 28870087744 is 169912.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 1616040000 + 27254047744 = 40200^2 + 165088^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 91072674 + ... + 91072990.

Almost surely, 2^28870087744 is an apocalyptic number.

28870087744 is the 169912-nd square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28870087744

28870087744 is an abundant number, since it is smaller than the sum of its proper divisors (29470854629).

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

28870087744 is an frugal number, since it uses more digits than its factorization.

28870087744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 780 (or 386 counting only the distinct ones).

The product of its (nonzero) digits is 5619712, while the sum is 55.

The spelling of 28870087744 in words is "twenty-eight billion, eight hundred seventy million, eighty-seven thousand, seven hundred forty-four".