1587040 has 96 divisors (see below), whose sum is σ = 4656960. Its totient is φ = 497664.

The previous prime is 1587011. The next prime is 1587067. The reversal of 1587040 is 407851.

It is a junction number, because it is equal to n+sod(n) for n = 1586996 and 1587014.

It is a congruent 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, 14506 + ... + 14614.

It is an arithmetic number, because the mean of its divisors is an integer number (48510).

2^1587040 is an apocalyptic number.

1587040 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 1587040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2328480).

1587040 is an abundant number, since it is smaller than the sum of its proper divisors (3069920).

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

1587040 is a wasteful number, since it uses less digits than its factorization.

1587040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144 (or 136 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 25.

The square root of 1587040 is about 1259.7777581780. Note that the first 4 decimals coincide. The cubic root of 1587040 is about 116.6440591115.

The spelling of 1587040 in words is "one million, five hundred eighty-seven thousand, forty".