10218390 has 128 divisors (see below), whose sum is σ = 31933440. Its totient is φ = 2032128.

The previous prime is 10218359. The next prime is 10218421. The reversal of 10218390 is 9381201.

It is an interprime number because it is at equal distance from previous prime (10218359) and next prime (10218421).

It is a self number, because there is not a number n which added to its sum of digits gives 10218390.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 51772 + ... + 51968.

It is an arithmetic number, because the mean of its divisors is an integer number (249480).

Almost surely, 2^10218390 is an apocalyptic number.

10218390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 10218390, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15966720).

10218390 is an abundant number, since it is smaller than the sum of its proper divisors (21715050).

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

10218390 is a wasteful number, since it uses less digits than its factorization.

10218390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246.

The product of its (nonzero) digits is 432, while the sum is 24.

The square root of 10218390 is about 3196.6216541843. The cubic root of 10218390 is about 217.0005450658. Note that the first 3 decimals are identical.

Adding to 10218390 its reverse (9381201), we get a palindrome (19599591).

The spelling of 10218390 in words is "ten million, two hundred eighteen thousand, three hundred ninety".