1268788 has 6 divisors (see below), whose sum is σ = 2220386. Its totient is φ = 634392.

The previous prime is 1268783. The next prime is 1268789. The reversal of 1268788 is 8878621.

It can be written as a sum of positive squares in only one way, i.e., 1140624 + 128164 = 1068^2 + 358^2 .

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 1268788.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1268783) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158595 + ... + 158602.

2^1268788 is an apocalyptic number.

It is an amenable number.

1268788 is a deficient number, since it is larger than the sum of its proper divisors (951598).

1268788 is a wasteful number, since it uses less digits than its factorization.

1268788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317201 (or 317199 counting only the distinct ones).

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

The square root of 1268788 is about 1126.4049005575. The cubic root of 1268788 is about 108.2587531391.

The spelling of 1268788 in words is "one million, two hundred sixty-eight thousand, seven hundred eighty-eight".