1249888 has 24 divisors (see below), whose sum is σ = 2487240. Its totient is φ = 618240.

The previous prime is 1249873. The next prime is 1249901. The reversal of 1249888 is 8889421.

It is a self number, because there is not a number n which added to its sum of digits gives 1249888.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 4308 + ... + 4588.

It is an arithmetic number, because the mean of its divisors is an integer number (103635).

2^1249888 is an apocalyptic number.

It is an amenable number.

1249888 is a deficient number, since it is larger than the sum of its proper divisors (1237352).

1249888 is a wasteful number, since it uses less digits than its factorization.

1249888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 430 (or 422 counting only the distinct ones).

The product of its digits is 36864, while the sum is 40.

The square root of 1249888 is about 1117.9838997052. The cubic root of 1249888 is about 107.7185171164.

The spelling of 1249888 in words is "one million, two hundred forty-nine thousand, eight hundred eighty-eight".