1222464 has 28 divisors (see below), whose sum is σ = 3234944. Its totient is φ = 407424.

The previous prime is 1222433. The next prime is 1222471. The reversal of 1222464 is 4642221.

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 1222464.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2992 + ... + 3375.

2^1222464 is an apocalyptic number.

It is an amenable number.

1222464 is an abundant number, since it is smaller than the sum of its proper divisors (2012480).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1222464 is an equidigital number, since it uses as much as digits as its factorization.

1222464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6382 (or 6372 counting only the distinct ones).

The product of its digits is 768, while the sum is 21.

The square root of 1222464 is about 1105.6509394922. The cubic root of 1222464 is about 106.9248606307.

Adding to 1222464 its reverse (4642221), we get a palindrome (5864685).

The spelling of 1222464 in words is "one million, two hundred twenty-two thousand, four hundred sixty-four".