1289704 has 16 divisors (see below), whose sum is σ = 2604420. Its totient is φ = 595200.

The previous prime is 1289677. The next prime is 1289711. The reversal of 1289704 is 4079821.

It can be written as a sum of positive squares in 2 ways, for example, as 1205604 + 84100 = 1098^2 + 290^2 .

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, 6097 + ... + 6304.

2^1289704 is an apocalyptic number.

It is an amenable number.

1289704 is an abundant number, since it is smaller than the sum of its proper divisors (1314716).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1289704 is a wasteful number, since it uses less digits than its factorization.

1289704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12420 (or 12416 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 1289704 is about 1135.6513549501. The cubic root of 1289704 is about 108.8503965631.

The spelling of 1289704 in words is "one million, two hundred eighty-nine thousand, seven hundred four".