411215220 has 144 divisors (see below), whose sum is σ = 1372250880. Its totient is φ = 99042048.

The previous prime is 411215209. The next prime is 411215221. The reversal of 411215220 is 22512114.

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

It is a junction number, because it is equal to n+sod(n) for n = 411215193 and 411215202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (411215221) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 108111 + ... + 111849.

It is an arithmetic number, because the mean of its divisors is an integer number (9529520).

Almost surely, 2^411215220 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 411215220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (686125440).

411215220 is an abundant number, since it is smaller than the sum of its proper divisors (961035660).

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

411215220 is a wasteful number, since it uses less digits than its factorization.

411215220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3814 (or 3809 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The square root of 411215220 is about 20278.4422478651. The cubic root of 411215220 is about 743.6291292408.

Adding to 411215220 its reverse (22512114), we get a palindrome (433727334).

The spelling of 411215220 in words is "four hundred eleven million, two hundred fifteen thousand, two hundred twenty".