987841440 has 192 divisors, whose sum is σ = 3661096320. Its totient is φ = 247910400.

The previous prime is 987841411. The next prime is 987841453. The reversal of 987841440 is 44148789.

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

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 31 ways as a sum of consecutive naturals, for example, 66715 + ... + 80165.

It is an arithmetic number, because the mean of its divisors is an integer number (19068210).

Almost surely, 2^987841440 is an apocalyptic number.

987841440 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 987841440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1830548160).

987841440 is an abundant number, since it is smaller than the sum of its proper divisors (2673254880).

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

987841440 is a wasteful number, since it uses less digits than its factorization.

987841440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13492 (or 13478 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 45.

The square root of 987841440 is about 31429.9449569992. The cubic root of 987841440 is about 995.9306091880.

The spelling of 987841440 in words is "nine hundred eighty-seven million, eight hundred forty-one thousand, four hundred forty".