1280315 has 8 divisors (see below), whose sum is σ = 1617360. Its totient is φ = 970272.

The previous prime is 1280309. The next prime is 1280317. The reversal of 1280315 is 5130821.

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 1280315 - 2¹⁴ = 1263931 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1280317) 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 7 ways as a sum of consecutive naturals, for example, 6644 + ... + 6833.

It is an arithmetic number, because the mean of its divisors is an integer number (202170).

2^1280315 is an apocalyptic number.

1280315 is a deficient number, since it is larger than the sum of its proper divisors (337045).

1280315 is a wasteful number, since it uses less digits than its factorization.

1280315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13501.

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 1280315 is about 1131.5100529823. The cubic root of 1280315 is about 108.5856106161.

The spelling of 1280315 in words is "one million, two hundred eighty thousand, three hundred fifteen".