987788340 has 576 divisors, whose sum is σ = 4092641280. Its totient is φ = 188179200.

The previous prime is 987788323. The next prime is 987788353. The reversal of 987788340 is 43887789.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 31864125 + ... + 31864155.

It is an arithmetic number, because the mean of its divisors is an integer number (7105280).

Almost surely, 2^987788340 is an apocalyptic number.

987788340 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 987788340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2046320640).

987788340 is an abundant number, since it is smaller than the sum of its proper divisors (3104852940).

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

987788340 is a wasteful number, since it uses less digits than its factorization.

987788340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105 (or 78 counting only the distinct ones).

The product of its (nonzero) digits is 2709504, while the sum is 54.

The square root of 987788340 is about 31429.1002098374. The cubic root of 987788340 is about 995.9127639277.

The spelling of 987788340 in words is "nine hundred eighty-seven million, seven hundred eighty-eight thousand, three hundred forty".