1988520 has 64 divisors (see below), whose sum is σ = 6073920. Its totient is φ = 520704.

The previous prime is 1988513. The next prime is 1988531. The reversal of 1988520 is 258891.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8647 + ... + 8873.

It is an arithmetic number, because the mean of its divisors is an integer number (94905).

2^1988520 is an apocalyptic number.

1988520 is a gapful number since it is divisible by the number (10) 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 1988520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3036960).

1988520 is an abundant number, since it is smaller than the sum of its proper divisors (4085400).

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

1988520 is a wasteful number, since it uses less digits than its factorization.

1988520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 314 (or 310 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 33.

The square root of 1988520 is about 1410.1489283051. The cubic root of 1988520 is about 125.7505773813.

The spelling of 1988520 in words is "one million, nine hundred eighty-eight thousand, five hundred twenty".