987328440 has 336 divisors, whose sum is σ = 3880106280. Its totient is φ = 225348480.

The previous prime is 987328427. The next prime is 987328471. The reversal of 987328440 is 44823789.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

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 83 ways as a sum of consecutive naturals, for example, 1428495 + ... + 1429185.

Almost surely, 2^987328440 is an apocalyptic number.

987328440 is a gapful number since it is divisible by the number (90) 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 987328440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1940053140).

987328440 is an abundant number, since it is smaller than the sum of its proper divisors (2892777840).

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

987328440 is a wasteful number, since it uses less digits than its factorization.

987328440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 734 (or 708 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 45.

The square root of 987328440 is about 31421.7828902181. The cubic root of 987328440 is about 995.7581790629.

The spelling of 987328440 in words is "nine hundred eighty-seven million, three hundred twenty-eight thousand, four hundred forty".