3601220 has 48 divisors (see below), whose sum is σ = 8951040. Its totient is φ = 1190784.

The previous prime is 3601219. The next prime is 3601237. The reversal of 3601220 is 221063.

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

It is a zygodrome in base 13.

It is a junction number, because it is equal to n+sod(n) for n = 3601195 and 3601204.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3617 + ... + 4503.

It is an arithmetic number, because the mean of its divisors is an integer number (186480).

Almost surely, 2^3601220 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 3601220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4475520).

3601220 is an abundant number, since it is smaller than the sum of its proper divisors (5349820).

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

3601220 is a wasteful number, since it uses less digits than its factorization.

3601220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 932 (or 930 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 3601220 is about 1897.6880670964. The cubic root of 3601220 is about 153.2791974402.

Adding to 3601220 its reverse (221063), we get a palindrome (3822283).

The spelling of 3601220 in words is "three million, six hundred one thousand, two hundred twenty".