1287330 has 64 divisors (see below), whose sum is σ = 3483648. Its totient is φ = 301760.

The previous prime is 1287329. The next prime is 1287343. The reversal of 1287330 is 337821.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1287330.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15469 + ... + 15551.

It is an arithmetic number, because the mean of its divisors is an integer number (54432).

2^1287330 is an apocalyptic number.

1287330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1287330, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1741824).

1287330 is an abundant number, since it is smaller than the sum of its proper divisors (2196318).

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

1287330 is a wasteful number, since it uses less digits than its factorization.

1287330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151.

The product of its (nonzero) digits is 1008, while the sum is 24.

The square root of 1287330 is about 1134.6056583677. The cubic root of 1287330 is about 108.7835673892.

The spelling of 1287330 in words is "one million, two hundred eighty-seven thousand, three hundred thirty".