10501218 has 64 divisors (see below), whose sum is σ = 28734720. Its totient is φ = 2768256.

The previous prime is 10501213. The next prime is 10501237. The reversal of 10501218 is 81210501.

It is a super-2 number, since 2×10501218² = 220551158967048, which contains 22 as substring.

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

It is an alternating number because its digits alternate between odd and even.

It is a self number, because there is not a number n which added to its sum of digits gives 10501218.

It is not an unprimeable number, because it can be changed into a prime (10501213) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3846 + ... + 5982.

It is an arithmetic number, because the mean of its divisors is an integer number (448980).

Almost surely, 2^10501218 is an apocalyptic number.

10501218 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 10501218, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14367360).

10501218 is an abundant number, since it is smaller than the sum of its proper divisors (18233502).

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

10501218 is a wasteful number, since it uses less digits than its factorization.

10501218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2168 (or 2162 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 18.

The square root of 10501218 is about 3240.5582852342. The cubic root of 10501218 is about 218.9844237374.

Adding to 10501218 its reverse (81210501), we get a palindrome (91711719).

The spelling of 10501218 in words is "ten million, five hundred one thousand, two hundred eighteen".