4061220 has 48 divisors (see below), whose sum is σ = 11491200. Its totient is φ = 1071616.

The previous prime is 4061207. The next prime is 4061227. The reversal of 4061220 is 221604.

4061220 = T₆₅ + T₆₆ + ... + T₂₉₀.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 4061220.

It is not an unprimeable number, because it can be changed into a prime (4061227) 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, 6481 + ... + 7079.

It is an arithmetic number, because the mean of its divisors is an integer number (239400).

Almost surely, 2^4061220 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 4061220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5745600).

4061220 is an abundant number, since it is smaller than the sum of its proper divisors (7429980).

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

4061220 is a wasteful number, since it uses less digits than its factorization.

4061220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 724 (or 722 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 4061220 is about 2015.2468831386. The cubic root of 4061220 is about 159.5458475460.

Adding to 4061220 its reverse (221604), we get a palindrome (4282824).

The spelling of 4061220 in words is "four million, sixty-one thousand, two hundred twenty".