1288994 has 16 divisors (see below), whose sum is σ = 2256000. Its totient is φ = 552132.

The previous prime is 1288993. The next prime is 1288997. The reversal of 1288994 is 4998821.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1288993) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 254 + ... + 1625.

It is an arithmetic number, because the mean of its divisors is an integer number (141000).

2^1288994 is an apocalyptic number.

1288994 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1288994 is a deficient number, since it is larger than the sum of its proper divisors (967006).

1288994 is an equidigital number, since it uses as much as digits as its factorization.

1288994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1902 (or 1888 counting only the distinct ones).

The product of its digits is 41472, while the sum is 41.

The square root of 1288994 is about 1135.3387159786. The cubic root of 1288994 is about 108.8304183439.

The spelling of 1288994 in words is "one million, two hundred eighty-eight thousand, nine hundred ninety-four".