1228258 has 4 divisors (see below), whose sum is σ = 1842390. Its totient is φ = 614128.

The previous prime is 1228247. The next prime is 1228273. The reversal of 1228258 is 8528221.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1225449 + 2809 = 1107^2 + 53^2 .

It is a d-powerful number, because it can be written as 1 + 2¹¹ + 2¹⁴ + 8⁵ + 2¹⁹ + 5⁸ + 8⁶ .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 307063 + ... + 307066.

2^1228258 is an apocalyptic number.

1228258 is a deficient number, since it is larger than the sum of its proper divisors (614132).

1228258 is an equidigital number, since it uses as much as digits as its factorization.

1228258 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 614131.

The product of its digits is 2560, while the sum is 28.

The square root of 1228258 is about 1108.2680181256. The cubic root of 1228258 is about 107.0935217519.

The spelling of 1228258 in words is "one million, two hundred twenty-eight thousand, two hundred fifty-eight".