1604120 has 64 divisors (see below), whose sum is σ = 4380480. Its totient is φ = 516096.

The previous prime is 1604111. The next prime is 1604123. The reversal of 1604120 is 214061.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 1604095 and 1604104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1604123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4592 + ... + 4928.

It is an arithmetic number, because the mean of its divisors is an integer number (68445).

2^1604120 is an apocalyptic number.

1604120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1604120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2190240).

1604120 is an abundant number, since it is smaller than the sum of its proper divisors (2776360).

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

1604120 is a wasteful number, since it uses less digits than its factorization.

1604120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 372 (or 368 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 1604120 is about 1266.5385900161. The cubic root of 1604120 is about 117.0610147581.

Adding to 1604120 its reverse (214061), we get a palindrome (1818181).

It can be divided in two parts, 16041 and 20, that added together give a palindrome (16061).

The spelling of 1604120 in words is "one million, six hundred four thousand, one hundred twenty".