1987568 has 40 divisors (see below), whose sum is σ = 4392576. Its totient is φ = 862400.

The previous prime is 1987549. The next prime is 1987577. The reversal of 1987568 is 8657891.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (44).

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, 3803 + ... + 4293.

2^1987568 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 1987568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2196288).

1987568 is an abundant number, since it is smaller than the sum of its proper divisors (2405008).

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

1987568 is a wasteful number, since it uses less digits than its factorization.

1987568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 533 (or 527 counting only the distinct ones).

The product of its digits is 120960, while the sum is 44.

The square root of 1987568 is about 1409.8113348956. The cubic root of 1987568 is about 125.7305065650.

The spelling of 1987568 in words is "one million, nine hundred eighty-seven thousand, five hundred sixty-eight".