1228586 has 4 divisors (see below), whose sum is σ = 1842882. Its totient is φ = 614292.

The previous prime is 1228583. The next prime is 1228589. The reversal of 1228586 is 6858221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6858221 = 19 ⋅360959.

It is an interprime number because it is at equal distance from previous prime (1228583) and next prime (1228589).

It can be written as a sum of positive squares in only one way, i.e., 1168561 + 60025 = 1081^2 + 245^2 .

It is not an unprimeable number, because it can be changed into a prime (1228583) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 307145 + ... + 307148.

2^1228586 is an apocalyptic number.

1228586 is a deficient number, since it is larger than the sum of its proper divisors (614296).

1228586 is an equidigital number, since it uses as much as digits as its factorization.

1228586 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 614295.

The product of its digits is 7680, while the sum is 32.

The square root of 1228586 is about 1108.4159868930. The cubic root of 1228586 is about 107.1030538288.

The spelling of 1228586 in words is "one million, two hundred twenty-eight thousand, five hundred eighty-six".