20241218 has 16 divisors (see below), whose sum is σ = 31200576. Its totient is φ = 9843120.

The previous prime is 20241211. The next prime is 20241229. The reversal of 20241218 is 81214202.

It is a happy number.

It is a super-2 number, since 2×20241218² = 819413812247048, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20241218.

It is not an unprimeable number, because it can be changed into a prime (20241211) 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, 31763 + ... + 32393.

It is an arithmetic number, because the mean of its divisors is an integer number (1950036).

Almost surely, 2^20241218 is an apocalyptic number.

20241218 is a deficient number, since it is larger than the sum of its proper divisors (10959358).

20241218 is a wasteful number, since it uses less digits than its factorization.

20241218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1049.

The product of its (nonzero) digits is 256, while the sum is 20.

The square root of 20241218 is about 4499.0241164057. The cubic root of 20241218 is about 272.5286808743.

The spelling of 20241218 in words is "twenty million, two hundred forty-one thousand, two hundred eighteen".