10218520 has 64 divisors (see below), whose sum is σ = 25391520. Its totient is φ = 3677184.

The previous prime is 10218517. The next prime is 10218521. The reversal of 10218520 is 2581201.

10218520 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10218521) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22132 + ... + 22588.

Almost surely, 2^10218520 is an apocalyptic number.

10218520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 10218520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12695760).

10218520 is an abundant number, since it is smaller than the sum of its proper divisors (15173000).

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

10218520 is a wasteful number, since it uses less digits than its factorization.

10218520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 524 (or 520 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 19.

The square root of 10218520 is about 3196.6419880869. The cubic root of 10218520 is about 217.0014653005.

Adding to 10218520 its reverse (2581201), we get a palindrome (12799721).

The spelling of 10218520 in words is "ten million, two hundred eighteen thousand, five hundred twenty".