1178428 has 12 divisors (see below), whose sum is σ = 2152080. Its totient is φ = 563552.

The previous prime is 1178417. The next prime is 1178447. The reversal of 1178428 is 8248711.

It is a self number, because there is not a number n which added to its sum of digits gives 1178428.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6313 + ... + 6496.

It is an arithmetic number, because the mean of its divisors is an integer number (179340).

2^1178428 is an apocalyptic number.

It is an amenable number.

1178428 is a deficient number, since it is larger than the sum of its proper divisors (973652).

1178428 is a wasteful number, since it uses less digits than its factorization.

1178428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12836 (or 12834 counting only the distinct ones).

The product of its digits is 3584, while the sum is 31.

The square root of 1178428 is about 1085.5542363235. The cubic root of 1178428 is about 105.6252340599.

The spelling of 1178428 in words is "one million, one hundred seventy-eight thousand, four hundred twenty-eight".