1188404 has 12 divisors (see below), whose sum is σ = 2376864. Its totient is φ = 509304.

The previous prime is 1188389. The next prime is 1188409. The reversal of 1188404 is 4048811.

1188404 is an admirable number.

It is a hoax number, since the sum of its digits (26) coincides with the sum of the digits of its distinct prime factors.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1188409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21194 + ... + 21249.

It is an arithmetic number, because the mean of its divisors is an integer number (198072).

2^1188404 is an apocalyptic number.

1188404 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1188404 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1188404 is a wasteful number, since it uses less digits than its factorization.

1188404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42454 (or 42452 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 26.

The square root of 1188404 is about 1090.1394406222. The cubic root of 1188404 is about 105.9224542608.

The spelling of 1188404 in words is "one million, one hundred eighty-eight thousand, four hundred four".