1268428 has 24 divisors (see below), whose sum is σ = 2570400. Its totient is φ = 536448.

The previous prime is 1268419. The next prime is 1268429. The reversal of 1268428 is 8248621.

It is a plaindrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 1268428.

It is not an unprimeable number, because it can be changed into a prime (1268429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2238 + ... + 2746.

It is an arithmetic number, because the mean of its divisors is an integer number (107100).

2^1268428 is an apocalyptic number.

It is an amenable number.

1268428 is an abundant number, since it is smaller than the sum of its proper divisors (1301972).

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

1268428 is a wasteful number, since it uses less digits than its factorization.

1268428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 609 (or 607 counting only the distinct ones).

The product of its digits is 6144, while the sum is 31.

The square root of 1268428 is about 1126.2450887795. The cubic root of 1268428 is about 108.2485132257.

The spelling of 1268428 in words is "one million, two hundred sixty-eight thousand, four hundred twenty-eight".