1228315 has 16 divisors (see below), whose sum is σ = 1679616. Its totient is φ = 853600.

The previous prime is 1228309. The next prime is 1228327. The reversal of 1228315 is 5138221.

1228315 = 220² + 221² + ... + 242².

It is not a de Polignac number, because 1228315 - 2⁷ = 1228187 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 780 + ... + 1750.

It is an arithmetic number, because the mean of its divisors is an integer number (104976).

2^1228315 is an apocalyptic number.

1228315 is a deficient number, since it is larger than the sum of its proper divisors (451301).

1228315 is a wasteful number, since it uses less digits than its factorization.

1228315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1010.

The product of its digits is 480, while the sum is 22.

The square root of 1228315 is about 1108.2937336284. The cubic root of 1228315 is about 107.0951783627.

The spelling of 1228315 in words is "one million, two hundred twenty-eight thousand, three hundred fifteen".