1288465 has 8 divisors (see below), whose sum is σ = 1552320. Its totient is φ = 1026672.

The previous prime is 1288439. The next prime is 1288487. The reversal of 1288465 is 5648821.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1288465 - 2⁷ = 1288337 is a prime.

It is an Ulam number.

1288465 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 1288465.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1902 + ... + 2488.

It is an arithmetic number, because the mean of its divisors is an integer number (194040).

2^1288465 is an apocalyptic number.

It is an amenable number.

1288465 is a deficient number, since it is larger than the sum of its proper divisors (263855).

1288465 is an equidigital number, since it uses as much as digits as its factorization.

1288465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1031.

The product of its digits is 15360, while the sum is 34.

The square root of 1288465 is about 1135.1057219484. The cubic root of 1288465 is about 108.8155283938.

The spelling of 1288465 in words is "one million, two hundred eighty-eight thousand, four hundred sixty-five".