41405220 has 72 divisors (see below), whose sum is σ = 129011064. Its totient is φ = 10741248.

The previous prime is 41405201. The next prime is 41405233. The reversal of 41405220 is 2250414.

41405220 is a `hidden beast` number, since 4 + 140 + 522 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 16064064 + 25341156 = 4008^2 + 5034^2 .

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 = 41405193 and 41405202.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3552 + ... + 9768.

Almost surely, 2^41405220 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 41405220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64505532).

41405220 is an abundant number, since it is smaller than the sum of its proper divisors (87605844).

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

41405220 is a wasteful number, since it uses less digits than its factorization.

41405220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6269 (or 6264 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 41405220 is about 6434.6888036641. The cubic root of 41405220 is about 345.9540072738.

Adding to 41405220 its reverse (2250414), we get a palindrome (43655634).

The spelling of 41405220 in words is "forty-one million, four hundred five thousand, two hundred twenty".