1587428 has 12 divisors (see below), whose sum is σ = 2791740. Its totient is φ = 789792.

The previous prime is 1587413. The next prime is 1587449. The reversal of 1587428 is 8247851.

It can be written as a sum of positive squares in 2 ways, for example, as 1149184 + 438244 = 1072^2 + 662^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50 + ... + 1782.

It is an arithmetic number, because the mean of its divisors is an integer number (232645).

2^1587428 is an apocalyptic number.

It is an amenable number.

1587428 is a deficient number, since it is larger than the sum of its proper divisors (1204312).

1587428 is a wasteful number, since it uses less digits than its factorization.

1587428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1966 (or 1964 counting only the distinct ones).

The product of its digits is 17920, while the sum is 35.

The square root of 1587428 is about 1259.9317441830. The cubic root of 1587428 is about 116.6535640614.

The spelling of 1587428 in words is "one million, five hundred eighty-seven thousand, four hundred twenty-eight".