13524420 has 96 divisors (see below), whose sum is σ = 46626048. Its totient is φ = 2852352.

The previous prime is 13524389. The next prime is 13524421. The reversal of 13524420 is 2442531.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (13524421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4222 + ... + 6698.

It is an arithmetic number, because the mean of its divisors is an integer number (485688).

Almost surely, 2^13524420 is an apocalyptic number.

13524420 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 13524420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23313024).

13524420 is an abundant number, since it is smaller than the sum of its proper divisors (33101628).

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

13524420 is a wasteful number, since it uses less digits than its factorization.

13524420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2509 (or 2507 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 13524420 is about 3677.5562538186. The cubic root of 13524420 is about 238.2536429200.

Adding to 13524420 its reverse (2442531), we get a palindrome (15966951).

The spelling of 13524420 in words is "thirteen million, five hundred twenty-four thousand, four hundred twenty".