1587996 has 18 divisors (see below), whose sum is σ = 4014192. Its totient is φ = 529320.

The previous prime is 1587991. The next prime is 1587997. The reversal of 1587996 is 6997851.

It is a tau number, because it is divible by the number of its divisors (18).

It is a zygodrome in base 3.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1587991) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 22020 + ... + 22091.

2^1587996 is an apocalyptic number.

It is an amenable number.

1587996 is an abundant number, since it is smaller than the sum of its proper divisors (2426196).

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

1587996 is a wasteful number, since it uses less digits than its factorization.

1587996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44121 (or 44116 counting only the distinct ones).

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

The square root of 1587996 is about 1260.1571330592. The cubic root of 1587996 is about 116.6674757314.

The spelling of 1587996 in words is "one million, five hundred eighty-seven thousand, nine hundred ninety-six".