13022520 has 128 divisors (see below), whose sum is σ = 45964800. Its totient is φ = 2889216.

The previous prime is 13022509. The next prime is 13022521. The reversal of 13022520 is 2522031.

13022520 is digitally balanced in base 2, base 4 and base 8, because in such bases it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (15).

13022520 is strictly pandigital in base 8.

It is a self number, because there is not a number n which added to its sum of digits gives 13022520.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13022521) 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, 30871 + ... + 31289.

It is an arithmetic number, because the mean of its divisors is an integer number (359100).

Almost surely, 2^13022520 is an apocalyptic number.

13022520 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 13022520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22982400).

13022520 is an abundant number, since it is smaller than the sum of its proper divisors (32942280).

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

13022520 is a wasteful number, since it uses less digits than its factorization.

13022520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 477 (or 473 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 15.

The square root of 13022520 is about 3608.6728862561. The cubic root of 13022520 is about 235.2691649519.

Adding to 13022520 its reverse (2522031), we get a palindrome (15544551).

The spelling of 13022520 in words is "thirteen million, twenty-two thousand, five hundred twenty".