1988856 has 48 divisors (see below), whose sum is σ = 5625360. Its totient is φ = 633600.

The previous prime is 1988851. The next prime is 1988887. The reversal of 1988856 is 6588891.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1988851) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1056 + ... + 2256.

It is an arithmetic number, because the mean of its divisors is an integer number (117195).

2^1988856 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 1988856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2812680).

1988856 is an abundant number, since it is smaller than the sum of its proper divisors (3636504).

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

1988856 is a wasteful number, since it uses less digits than its factorization.

1988856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1236 (or 1229 counting only the distinct ones).

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

The square root of 1988856 is about 1410.2680596255. The cubic root of 1988856 is about 125.7576596694.

It can be divided in two parts, 198885 and 6, that added together give a palindrome (198891).

The spelling of 1988856 in words is "one million, nine hundred eighty-eight thousand, eight hundred fifty-six".