1243888 has 10 divisors (see below), whose sum is σ = 2410064. Its totient is φ = 621936.

The previous prime is 1243883. The next prime is 1243889. The reversal of 1243888 is 8883421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1243883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38856 + ... + 38887.

2^1243888 is an apocalyptic number.

It is an amenable number.

1243888 is a deficient number, since it is larger than the sum of its proper divisors (1166176).

1243888 is an equidigital number, since it uses as much as digits as its factorization.

1243888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77751 (or 77745 counting only the distinct ones).

The product of its digits is 12288, while the sum is 34.

The square root of 1243888 is about 1115.2972697895. The cubic root of 1243888 is about 107.5458754983.

The spelling of 1243888 in words is "one million, two hundred forty-three thousand, eight hundred eighty-eight".