1988862 has 16 divisors (see below), whose sum is σ = 3991680. Its totient is φ = 660632.

The previous prime is 1988851. The next prime is 1988887. The reversal of 1988862 is 2688891.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2689 + ... + 3347.

It is an arithmetic number, because the mean of its divisors is an integer number (249480).

2^1988862 is an apocalyptic number.

1988862 is an abundant number, since it is smaller than the sum of its proper divisors (2002818).

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

1988862 is a wasteful number, since it uses less digits than its factorization.

1988862 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1167.

The product of its digits is 55296, while the sum is 42.

The square root of 1988862 is about 1410.2701868791. The cubic root of 1988862 is about 125.7577861315.

It can be divided in two parts, 1988 and 862, that added together give a triangular number (2850 = T₇₅).

The spelling of 1988862 in words is "one million, nine hundred eighty-eight thousand, eight hundred sixty-two".