1287376 has 20 divisors (see below), whose sum is σ = 2641572. Its totient is φ = 605696.

The previous prime is 1287373. The next prime is 1287401. The reversal of 1287376 is 6737821.

1287376 is nontrivially palindromic in base 15.

It can be written as a sum of positive squares in 2 ways, for example, as 608400 + 678976 = 780^2 + 824^2 .

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1287371) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2095 + ... + 2638.

2^1287376 is an apocalyptic number.

1287376 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1287376 is an abundant number, since it is smaller than the sum of its proper divisors (1354196).

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

1287376 is a wasteful number, since it uses less digits than its factorization.

1287376 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4758 (or 4752 counting only the distinct ones).

The product of its digits is 14112, while the sum is 34.

The square root of 1287376 is about 1134.6259295468. The cubic root of 1287376 is about 108.7848630902.

The spelling of 1287376 in words is "one million, two hundred eighty-seven thousand, three hundred seventy-six".