1228207 has 4 divisors (see below), whose sum is σ = 1236600. Its totient is φ = 1219816.

The previous prime is 1228193. The next prime is 1228219. The reversal of 1228207 is 7028221.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1228207 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1228247) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3973 + ... + 4270.

It is an arithmetic number, because the mean of its divisors is an integer number (309150).

2^1228207 is an apocalyptic number.

1228207 is a deficient number, since it is larger than the sum of its proper divisors (8393).

1228207 is an equidigital number, since it uses as much as digits as its factorization.

1228207 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8392.

The product of its (nonzero) digits is 448, while the sum is 22.

The square root of 1228207 is about 1108.2450090120. The cubic root of 1228207 is about 107.0920394778.

The spelling of 1228207 in words is "one million, two hundred twenty-eight thousand, two hundred seven".