988592640 has 480 divisors, whose sum is σ = 3828933504. Its totient is φ = 216760320.

The previous prime is 988592639. The next prime is 988592651. The reversal of 988592640 is 46295889.

It is a tau number, because it is divible by the number of its divisors (480).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 13923805 + ... + 13923875.

Almost surely, 2^988592640 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 988592640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1914466752).

988592640 is an abundant number, since it is smaller than the sum of its proper divisors (2840340864).

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

988592640 is a wasteful number, since it uses less digits than its factorization.

988592640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148 (or 125 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 51.

The square root of 988592640 is about 31441.8930727779. The cubic root of 988592640 is about 996.1829956820.

The spelling of 988592640 in words is "nine hundred eighty-eight million, five hundred ninety-two thousand, six hundred forty".