3605804020 has 96 divisors (see below), whose sum is σ = 9332886528. Its totient is φ = 1139553792.

The previous prime is 3605803997. The next prime is 3605804051. The reversal of 3605804020 is 204085063.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a self number, because there is not a number n which added to its sum of digits gives 3605804020.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2414394 + ... + 2415886.

It is an arithmetic number, because the mean of its divisors is an integer number (97217568).

Almost surely, 2^3605804020 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 3605804020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4666443264).

3605804020 is an abundant number, since it is smaller than the sum of its proper divisors (5727082508).

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

3605804020 is a wasteful number, since it uses less digits than its factorization.

3605804020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2849 (or 2847 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 3605804020 is about 60048.3473544443. The cubic root of 3605804020 is about 1533.4420661183.

Adding to 3605804020 its reverse (204085063), we get a palindrome (3809889083).

The spelling of 3605804020 in words is "three billion, six hundred five million, eight hundred four thousand, twenty".