41220018 has 96 divisors (see below), whose sum is σ = 107707392. Its totient is φ = 11145600.

The previous prime is 41220013. The next prime is 41220037. The reversal of 41220018 is 81002214.

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (41220013) 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, 238180 + ... + 238352.

It is an arithmetic number, because the mean of its divisors is an integer number (1121952).

Almost surely, 2^41220018 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 41220018, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (53853696).

41220018 is an abundant number, since it is smaller than the sum of its proper divisors (66487374).

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

41220018 is a wasteful number, since it uses less digits than its factorization.

41220018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280 (or 277 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

The square root of 41220018 is about 6420.2817695176. The cubic root of 41220018 is about 345.4374287624.

The spelling of 41220018 in words is "forty-one million, two hundred twenty thousand, eighteen".