1604204000 has 384 divisors, whose sum is σ = 4891041792. Its totient is φ = 505190400.

The previous prime is 1604203973. The next prime is 1604204009. The reversal of 1604204000 is 4024061.

It is a self number, because there is not a number n which added to its sum of digits gives 1604204000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1604204009) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 30267974 + ... + 30268026.

It is an arithmetic number, because the mean of its divisors is an integer number (12737088).

Almost surely, 2^1604204000 is an apocalyptic number.

1604204000 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 1604204000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2445520896).

1604204000 is an abundant number, since it is smaller than the sum of its proper divisors (3286837792).

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

1604204000 is a wasteful number, since it uses less digits than its factorization.

1604204000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155 (or 137 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 1604204000 is about 40052.5155264935. The cubic root of 1604204000 is about 1170.6305802865.

Adding to 1604204000 its reverse (4024061), we get a palindrome (1608228061).

The spelling of 1604204000 in words is "one billion, six hundred four million, two hundred four thousand".