1988812 has 36 divisors (see below), whose sum is σ = 4133640. Its totient is φ = 834624.

The previous prime is 1988807. The next prime is 1988837. The reversal of 1988812 is 2188891.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14239 + ... + 14377.

2^1988812 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 1988812, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2066820).

1988812 is an abundant number, since it is smaller than the sum of its proper divisors (2144828).

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

1988812 is a wasteful number, since it uses less digits than its factorization.

1988812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230 (or 221 counting only the distinct ones).

The product of its digits is 9216, while the sum is 37.

The square root of 1988812 is about 1410.2524596681. The cubic root of 1988812 is about 125.7567322723.

It can be divided in two parts, 19888 and 12, that added together give a triangular number (19900 = T₁₉₉).

The spelling of 1988812 in words is "one million, nine hundred eighty-eight thousand, eight hundred twelve".