988297856 has 384 divisors, whose sum is σ = 2813045760. Its totient is φ = 340623360.

The previous prime is 988297831. The next prime is 988297859. The reversal of 988297856 is 658792889.

It is a Harshad number since it is a multiple of its sum of digits (62).

Its product of digits (17418240) is a multiple of the sum of its prime factors (112).

It is not an unprimeable number, because it can be changed into a prime (988297859) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 31880561 + ... + 31880591.

It is an arithmetic number, because the mean of its divisors is an integer number (7325640).

Almost surely, 2^988297856 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 988297856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1406522880).

988297856 is an abundant number, since it is smaller than the sum of its proper divisors (1824747904).

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

988297856 is a wasteful number, since it uses less digits than its factorization.

988297856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112 (or 93 counting only the distinct ones).

The product of its digits is 17418240, while the sum is 62.

The square root of 988297856 is about 31437.2049648184. The cubic root of 988297856 is about 996.0839700607.

The spelling of 988297856 in words is "nine hundred eighty-eight million, two hundred ninety-seven thousand, eight hundred fifty-six".