1222264 has 8 divisors (see below), whose sum is σ = 2291760. Its totient is φ = 611128.

The previous prime is 1222259. The next prime is 1222267. The reversal of 1222264 is 4622221.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 76384 + ... + 76399.

It is an arithmetic number, because the mean of its divisors is an integer number (286470).

2^1222264 is an apocalyptic number.

It is an amenable number.

1222264 is a deficient number, since it is larger than the sum of its proper divisors (1069496).

1222264 is a wasteful number, since it uses less digits than its factorization.

1222264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152789 (or 152785 counting only the distinct ones).

The product of its digits is 384, while the sum is 19.

The square root of 1222264 is about 1105.5604913346. The cubic root of 1222264 is about 106.9190292010.

Adding to 1222264 its reverse (4622221), we get a palindrome (5844485).

The spelling of 1222264 in words is "one million, two hundred twenty-two thousand, two hundred sixty-four".