1288315 has 8 divisors (see below), whose sum is σ = 1766880. Its totient is φ = 883392.

The previous prime is 1288307. The next prime is 1288337. The reversal of 1288315 is 5138821.

1288315 = 426² + 427² + ... + 432².

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 1288315 - 2³ = 1288307 is a prime.

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, 18370 + ... + 18439.

It is an arithmetic number, because the mean of its divisors is an integer number (220860).

2^1288315 is an apocalyptic number.

1288315 is a deficient number, since it is larger than the sum of its proper divisors (478565).

1288315 is an equidigital number, since it uses as much as digits as its factorization.

1288315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36821.

The product of its digits is 1920, while the sum is 28.

The square root of 1288315 is about 1135.0396468846. The cubic root of 1288315 is about 108.8113055492.

The spelling of 1288315 in words is "one million, two hundred eighty-eight thousand, three hundred fifteen".