988421724 has 96 divisors (see below), whose sum is σ = 2718777600. Its totient is φ = 309666240.

The previous prime is 988421719. The next prime is 988421741. The reversal of 988421724 is 427124889.

It is a self number, because there is not a number n which added to its sum of digits gives 988421724.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 266974 + ... + 270650.

It is an arithmetic number, because the mean of its divisors is an integer number (28320600).

Almost surely, 2^988421724 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 988421724, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1359388800).

988421724 is an abundant number, since it is smaller than the sum of its proper divisors (1730355876).

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

988421724 is a wasteful number, since it uses less digits than its factorization.

988421724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3840 (or 3832 counting only the distinct ones).

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

The square root of 988421724 is about 31439.1749891755. The cubic root of 988421724 is about 996.1255829456.

The spelling of 988421724 in words is "nine hundred eighty-eight million, four hundred twenty-one thousand, seven hundred twenty-four".