1204866 has 48 divisors (see below), whose sum is σ = 2970240. Its totient is φ = 349920.

The previous prime is 1204859. The next prime is 1204871. The reversal of 1204866 is 6684021.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4311 + ... + 4581.

It is an arithmetic number, because the mean of its divisors is an integer number (61880).

2^1204866 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1204866, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1485120).

1204866 is an abundant number, since it is smaller than the sum of its proper divisors (1765374).

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

1204866 is a wasteful number, since it uses less digits than its factorization.

1204866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 311 (or 308 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 1204866 is about 1097.6638829806. The cubic root of 1204866 is about 106.4092992230.

Adding to 1204866 its reverse (6684021), we get a palindrome (7888887).

The spelling of 1204866 in words is "one million, two hundred four thousand, eight hundred sixty-six".