987086144 has 56 divisors (see below), whose sum is σ = 2166201408. Its totient is φ = 442506240.

The previous prime is 987086141. The next prime is 987086153. The reversal of 987086144 is 441680789.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (987086141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41789 + ... + 60995.

It is an arithmetic number, because the mean of its divisors is an integer number (38682168).

Almost surely, 2^987086144 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 987086144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1083100704).

987086144 is an abundant number, since it is smaller than the sum of its proper divisors (1179115264).

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

987086144 is a wasteful number, since it uses less digits than its factorization.

987086144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19303 (or 19293 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 47.

The square root of 987086144 is about 31417.9271117622. The cubic root of 987086144 is about 995.6767174969.

The spelling of 987086144 in words is "nine hundred eighty-seven million, eighty-six thousand, one hundred forty-four".