1987248528 has 120 divisors (see below), whose sum is σ = 5662762560. Its totient is φ = 650476800.

The previous prime is 1987248517. The next prime is 1987248563. The reversal of 1987248528 is 8258427891.

1987248528 is a `hidden beast` number, since 1 + 9 + 8 + 72 + 48 + 528 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2021125 + ... + 2022107.

It is an arithmetic number, because the mean of its divisors is an integer number (47189688).

Almost surely, 2^1987248528 is an apocalyptic number.

1987248528 is a gapful number since it is divisible by the number (18) 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 1987248528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2831381280).

1987248528 is an abundant number, since it is smaller than the sum of its proper divisors (3675514032).

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

1987248528 is a wasteful number, since it uses less digits than its factorization.

1987248528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1237 (or 1228 counting only the distinct ones).

The product of its digits is 2580480, while the sum is 54.

The square root of 1987248528 is about 44578.5657911961. The cubic root of 1987248528 is about 1257.2376976757.

The spelling of 1987248528 in words is "one billion, nine hundred eighty-seven million, two hundred forty-eight thousand, five hundred twenty-eight".