1987596 has 72 divisors (see below), whose sum is σ = 5625984. Its totient is φ = 587520.

The previous prime is 1987577. The next prime is 1987619. The reversal of 1987596 is 6957891.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14440 + ... + 14576.

2^1987596 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 1987596, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2812992).

1987596 is an abundant number, since it is smaller than the sum of its proper divisors (3638388).

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

1987596 is a wasteful number, since it uses less digits than its factorization.

1987596 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191 (or 186 counting only the distinct ones).

The product of its digits is 136080, while the sum is 45.

The square root of 1987596 is about 1409.8212652673. The cubic root of 1987596 is about 125.7310969745.

It can be divided in two parts, 198759 and 6, that added together give a triangular number (198765 = T₆₃₀).

The spelling of 1987596 in words is "one million, nine hundred eighty-seven thousand, five hundred ninety-six".