10609218 has 40 divisors (see below), whose sum is σ = 24341328. Its totient is φ = 3451896.

The previous prime is 10609177. The next prime is 10609219. The reversal of 10609218 is 81290601.

It is a super-2 number, since 2×10609218² = 225111013143048, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 10609191 and 10609200.

It is not an unprimeable number, because it can be changed into a prime (10609219) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 6205 + ... + 7727.

Almost surely, 2^10609218 is an apocalyptic number.

10609218 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 10609218, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12170664).

10609218 is an abundant number, since it is smaller than the sum of its proper divisors (13732110).

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

10609218 is a wasteful number, since it uses less digits than its factorization.

10609218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1580 (or 1571 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 27.

The square root of 10609218 is about 3257.1794546816. The cubic root of 10609218 is about 219.7325814101.

Adding to 10609218 its reverse (81290601), we get a palindrome (91899819).

The spelling of 10609218 in words is "ten million, six hundred nine thousand, two hundred eighteen".