1223776 has 24 divisors (see below), whose sum is σ = 2434320. Its totient is φ = 605568.

The previous prime is 1223773. The next prime is 1223777. The reversal of 1223776 is 6773221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223773) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5230 + ... + 5458.

It is an arithmetic number, because the mean of its divisors is an integer number (101430).

2^1223776 is an apocalyptic number.

1223776 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1223776 is a deficient number, since it is larger than the sum of its proper divisors (1210544).

1223776 is a wasteful number, since it uses less digits than its factorization.

1223776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 406 (or 398 counting only the distinct ones).

The product of its digits is 3528, while the sum is 28.

The square root of 1223776 is about 1106.2440960294. The cubic root of 1223776 is about 106.9630990465.

Adding to 1223776 its reverse (6773221), we get a palindrome (7996997).

The spelling of 1223776 in words is "one million, two hundred twenty-three thousand, seven hundred seventy-six".