1238768 has 20 divisors (see below), whose sum is σ = 2421720. Its totient is φ = 613824.

The previous prime is 1238767. The next prime is 1238771. The reversal of 1238768 is 8678321.

It is a Cunningham number, because it is equal to 1113²-1.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1238761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1946 + ... + 2502.

It is an arithmetic number, because the mean of its divisors is an integer number (121086).

2^1238768 is an apocalyptic number.

It is an amenable number.

1238768 is a deficient number, since it is larger than the sum of its proper divisors (1182952).

1238768 is a wasteful number, since it uses less digits than its factorization.

1238768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 704 (or 698 counting only the distinct ones).

The product of its digits is 16128, while the sum is 35.

The square root of 1238768 is about 1112.9995507636. Note that the first 3 decimals coincide. The cubic root of 1238768 is about 107.3981151134.

The spelling of 1238768 in words is "one million, two hundred thirty-eight thousand, seven hundred sixty-eight".