1587422 has 4 divisors (see below), whose sum is σ = 2381136. Its totient is φ = 793710.

The previous prime is 1587413. The next prime is 1587449. The reversal of 1587422 is 2247851.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 396854 + ... + 396857.

It is an arithmetic number, because the mean of its divisors is an integer number (595284).

2^1587422 is an apocalyptic number.

1587422 is a deficient number, since it is larger than the sum of its proper divisors (793714).

1587422 is an equidigital number, since it uses as much as digits as its factorization.

1587422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 793713.

The product of its digits is 4480, while the sum is 29.

The square root of 1587422 is about 1259.9293630994. The cubic root of 1587422 is about 116.6534170894.

The spelling of 1587422 in words is "one million, five hundred eighty-seven thousand, four hundred twenty-two".