1289252 has 12 divisors (see below), whose sum is σ = 2277660. Its totient is φ = 638496.

The previous prime is 1289237. The next prime is 1289261. The reversal of 1289252 is 2529821.

It can be written as a sum of positive squares in 2 ways, for example, as 556516 + 732736 = 746^2 + 856^2 .

It is an Ulam number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1043 + ... + 1914.

It is an arithmetic number, because the mean of its divisors is an integer number (189805).

2^1289252 is an apocalyptic number.

It is an amenable number.

1289252 is a deficient number, since it is larger than the sum of its proper divisors (988408).

1289252 is a wasteful number, since it uses less digits than its factorization.

1289252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3070 (or 3068 counting only the distinct ones).

The product of its digits is 2880, while the sum is 29.

The square root of 1289252 is about 1135.4523327732. The cubic root of 1289252 is about 108.8376788832.

The spelling of 1289252 in words is "one million, two hundred eighty-nine thousand, two hundred fifty-two".