988570440 has 512 divisors, whose sum is σ = 3998937600. Its totient is φ = 213995520.

The previous prime is 988570423. The next prime is 988570441. The reversal of 988570440 is 44075889.

988570440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not an unprimeable number, because it can be changed into a prime (988570441) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 5714194 + ... + 5714366.

It is an arithmetic number, because the mean of its divisors is an integer number (7810425).

Almost surely, 2^988570440 is an apocalyptic number.

988570440 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 988570440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1999468800).

988570440 is an abundant number, since it is smaller than the sum of its proper divisors (3010367160).

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

988570440 is a wasteful number, since it uses less digits than its factorization.

988570440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 254 (or 244 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 45.

The square root of 988570440 is about 31441.5400386177. The cubic root of 988570440 is about 996.1755388094.

The spelling of 988570440 in words is "nine hundred eighty-eight million, five hundred seventy thousand, four hundred forty".