41091220 has 24 divisors (see below), whose sum is σ = 86877000. Its totient is φ = 16324992.

The previous prime is 41091217. The next prime is 41091221. The reversal of 41091220 is 2219014.

It can be written as a sum of positive squares in 4 ways, for example, as 6563844 + 34527376 = 2562^2 + 5876^2 .

It is a super-2 number, since 2×41091220² = 3376976722176800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (41091221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3915 + ... + 9874.

It is an arithmetic number, because the mean of its divisors is an integer number (3619875).

Almost surely, 2^41091220 is an apocalyptic number.

It is an amenable number.

41091220 is an abundant number, since it is smaller than the sum of its proper divisors (45785780).

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

41091220 is a wasteful number, since it uses less digits than its factorization.

41091220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13947 (or 13945 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 41091220 is about 6410.2433651149. The cubic root of 41091220 is about 345.0772633788.

It can be divided in two parts, 4109 and 1220, that added together give a square (5329 = 73²).

The spelling of 41091220 in words is "forty-one million, ninety-one thousand, two hundred twenty".