1604136 has 32 divisors (see below), whose sum is σ = 4060800. Its totient is φ = 528000.

The previous prime is 1604131. The next prime is 1604143. The reversal of 1604136 is 6314061.

It is not an unprimeable number, because it can be changed into a prime (1604131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1761 + ... + 2511.

It is an arithmetic number, because the mean of its divisors is an integer number (126900).

2^1604136 is an apocalyptic number.

It is an amenable number.

1604136 is an abundant number, since it is smaller than the sum of its proper divisors (2456664).

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

1604136 is a wasteful number, since it uses less digits than its factorization.

1604136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 849 (or 845 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 1604136 is about 1266.5449064285. The cubic root of 1604136 is about 117.0614039580.

Adding to 1604136 its reverse (6314061), we get a palindrome (7918197).

The spelling of 1604136 in words is "one million, six hundred four thousand, one hundred thirty-six".