1224628 has 6 divisors (see below), whose sum is σ = 2143106. Its totient is φ = 612312.

The previous prime is 1224599. The next prime is 1224637. The reversal of 1224628 is 8264221.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 850084 + 374544 = 922^2 + 612^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 153075 + ... + 153082.

2^1224628 is an apocalyptic number.

It is an amenable number.

1224628 is a deficient number, since it is larger than the sum of its proper divisors (918478).

1224628 is a wasteful number, since it uses less digits than its factorization.

1224628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 306161 (or 306159 counting only the distinct ones).

The product of its digits is 1536, while the sum is 25.

The square root of 1224628 is about 1106.6291158288. The cubic root of 1224628 is about 106.9879160663.

Adding to 1224628 its reverse (8264221), we get a palindrome (9488849).

The spelling of 1224628 in words is "one million, two hundred twenty-four thousand, six hundred twenty-eight".