1988568 has 48 divisors (see below), whose sum is σ = 5475600. Its totient is φ = 651840.

The previous prime is 1988563. The next prime is 1988579. The reversal of 1988568 is 8658891.

1988568 is a `hidden beast` number, since 1 + 9 + 88 + 568 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1988561) 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 11 ways as a sum of consecutive naturals, for example, 4918 + ... + 5306.

It is an arithmetic number, because the mean of its divisors is an integer number (114075).

2^1988568 is an apocalyptic number.

1988568 is a gapful number since it is divisible by the number (18) 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 1988568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2737800).

1988568 is an abundant number, since it is smaller than the sum of its proper divisors (3487032).

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

1988568 is a wasteful number, since it uses less digits than its factorization.

1988568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 472 (or 465 counting only the distinct ones).

The product of its digits is 138240, while the sum is 45.

The square root of 1988568 is about 1410.1659476813. The cubic root of 1988568 is about 125.7515891856.

It can be divided in two parts, 1988 and 568, that added together give a triangular number (2556 = T₇₁).

The spelling of 1988568 in words is "one million, nine hundred eighty-eight thousand, five hundred sixty-eight".