1224684 has 18 divisors (see below), whose sum is σ = 3095820. Its totient is φ = 408216.

The previous prime is 1224677. The next prime is 1224701. The reversal of 1224684 is 4864221.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 16974 + ... + 17045.

It is an arithmetic number, because the mean of its divisors is an integer number (171990).

2^1224684 is an apocalyptic number.

It is an amenable number.

1224684 is an abundant number, since it is smaller than the sum of its proper divisors (1871136).

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

1224684 is a wasteful number, since it uses less digits than its factorization.

1224684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34029 (or 34024 counting only the distinct ones).

The product of its digits is 3072, while the sum is 27.

The square root of 1224684 is about 1106.6544176029. The cubic root of 1224684 is about 106.9895468287.

The spelling of 1224684 in words is "one million, two hundred twenty-four thousand, six hundred eighty-four".