1133604 has 18 divisors (see below), whose sum is σ = 2865590. Its totient is φ = 377856.

The previous prime is 1133591. The next prime is 1133621. The reversal of 1133604 is 4063311.

It can be written as a sum of positive squares in only one way, i.e., 1004004 + 129600 = 1002^2 + 360^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 15709 + ... + 15780.

2^1133604 is an apocalyptic number.

It is an amenable number.

1133604 is an abundant number, since it is smaller than the sum of its proper divisors (1731986).

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

1133604 is a wasteful number, since it uses less digits than its factorization.

1133604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31499 (or 31494 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 1133604 is about 1064.7084107867. The cubic root of 1133604 is about 104.2686594276.

Adding to 1133604 its reverse (4063311), we get a palindrome (5196915).

The spelling of 1133604 in words is "one million, one hundred thirty-three thousand, six hundred four".