1223624 has 8 divisors (see below), whose sum is σ = 2294310. Its totient is φ = 611808.

The previous prime is 1223603. The next prime is 1223633. The reversal of 1223624 is 4263221.

It can be written as a sum of positive squares in only one way, i.e., 1170724 + 52900 = 1082^2 + 230^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 1223596 and 1223605.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 76469 + ... + 76484.

2^1223624 is an apocalyptic number.

It is an amenable number.

1223624 is a deficient number, since it is larger than the sum of its proper divisors (1070686).

1223624 is a wasteful number, since it uses less digits than its factorization.

1223624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152959 (or 152955 counting only the distinct ones).

The product of its digits is 576, while the sum is 20.

The square root of 1223624 is about 1106.1753929644. The cubic root of 1223624 is about 106.9586703863.

Adding to 1223624 its reverse (4263221), we get a palindrome (5486845).

The spelling of 1223624 in words is "one million, two hundred twenty-three thousand, six hundred twenty-four".