1487816 has 48 divisors (see below), whose sum is σ = 3231900. Its totient is φ = 640640.

The previous prime is 1487809. The next prime is 1487819. The reversal of 1487816 is 6187841.

It can be written as a sum of positive squares in 2 ways, for example, as 1464100 + 23716 = 1210^2 + 154^2 .

It is not an unprimeable number, because it can be changed into a prime (1487819) by changing a digit.

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 in 11 ways as a sum of consecutive naturals, for example, 28046 + ... + 28098.

2^1487816 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 1487816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1615950).

1487816 is an abundant number, since it is smaller than the sum of its proper divisors (1744084).

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

1487816 is a wasteful number, since it uses less digits than its factorization.

1487816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110 (or 95 counting only the distinct ones).

The product of its digits is 10752, while the sum is 35.

The square root of 1487816 is about 1219.7606322554. The cubic root of 1487816 is about 114.1606435335.

The spelling of 1487816 in words is "one million, four hundred eighty-seven thousand, eight hundred sixteen".