1288678 has 16 divisors (see below), whose sum is σ = 2007360. Its totient is φ = 620136.

The previous prime is 1288657. The next prime is 1288691. The reversal of 1288678 is 8768821.

It is a self number, because there is not a number n which added to its sum of digits gives 1288678.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7825 + ... + 7987.

It is an arithmetic number, because the mean of its divisors is an integer number (125460).

2^1288678 is an apocalyptic number.

1288678 is a deficient number, since it is larger than the sum of its proper divisors (718682).

1288678 is a wasteful number, since it uses less digits than its factorization.

1288678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291.

The product of its digits is 43008, while the sum is 40.

The square root of 1288678 is about 1135.1995419308. The cubic root of 1288678 is about 108.8215242702.

The spelling of 1288678 in words is "one million, two hundred eighty-eight thousand, six hundred seventy-eight".