3601404 has 36 divisors (see below), whose sum is σ = 9238320. Its totient is φ = 1182720.

The previous prime is 3601369. The next prime is 3601421. The reversal of 3601404 is 4041063.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×3601404² = 25940221542432, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1852 + ... + 3260.

It is an arithmetic number, because the mean of its divisors is an integer number (256620).

Almost surely, 2^3601404 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 3601404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4619160).

3601404 is an abundant number, since it is smaller than the sum of its proper divisors (5636916).

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

3601404 is a wasteful number, since it uses less digits than its factorization.

3601404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1490 (or 1485 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 3601404 is about 1897.7365465206. The cubic root of 3601404 is about 153.2818079344.

Adding to 3601404 its reverse (4041063), we get a palindrome (7642467).

It can be divided in two parts, 3601 and 404, that added together give a triangular number (4005 = T₈₉).

The spelling of 3601404 in words is "three million, six hundred one thousand, four hundred four".