1289632 has 24 divisors (see below), whose sum is σ = 2564352. Its totient is φ = 638400.

The previous prime is 1289627. The next prime is 1289653. The reversal of 1289632 is 2369821.

It is a junction number, because it is equal to n+sod(n) for n = 1289594 and 1289603.

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, 6007 + ... + 6217.

It is an arithmetic number, because the mean of its divisors is an integer number (106848).

2^1289632 is an apocalyptic number.

It is an amenable number.

1289632 is a deficient number, since it is larger than the sum of its proper divisors (1274720).

1289632 is a wasteful number, since it uses less digits than its factorization.

1289632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 412 (or 404 counting only the distinct ones).

The product of its digits is 5184, while the sum is 31.

The square root of 1289632 is about 1135.6196546379. The cubic root of 1289632 is about 108.8483709370.

The spelling of 1289632 in words is "one million, two hundred eighty-nine thousand, six hundred thirty-two".