1604316 has 48 divisors (see below), whose sum is σ = 4354560. Its totient is φ = 450240.

The previous prime is 1604311. The next prime is 1604329. The reversal of 1604316 is 6134061.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a zygodrome in base 13.

It is a junction number, because it is equal to n+sod(n) for n = 1604292 and 1604301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1604311) 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, 5830 + ... + 6098.

It is an arithmetic number, because the mean of its divisors is an integer number (90720).

2^1604316 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1604316, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2177280).

1604316 is an abundant number, since it is smaller than the sum of its proper divisors (2750244).

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

1604316 is a wasteful number, since it uses less digits than its factorization.

1604316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 354 (or 352 counting only the distinct ones).

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

The square root of 1604316 is about 1266.6159638975. The cubic root of 1604316 is about 117.0657822785.

Adding to 1604316 its reverse (6134061), we get a palindrome (7738377).

The spelling of 1604316 in words is "one million, six hundred four thousand, three hundred sixteen".