13541220 has 144 divisors (see below), whose sum is σ = 51262848. Its totient is φ = 2810880.

The previous prime is 13541219. The next prime is 13541221. The reversal of 13541220 is 2214531.

It is an interprime number because it is at equal distance from previous prime (13541219) and next prime (13541221).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 13541193 and 13541202.

It is not an unprimeable number, because it can be changed into a prime (13541221) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 13372 + ... + 14348.

It is an arithmetic number, because the mean of its divisors is an integer number (355992).

Almost surely, 2^13541220 is an apocalyptic number.

13541220 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 13541220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25631424).

13541220 is an abundant number, since it is smaller than the sum of its proper divisors (37721628).

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

13541220 is a wasteful number, since it uses less digits than its factorization.

13541220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1010 (or 1005 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 13541220 is about 3679.8396704204. The cubic root of 13541220 is about 238.3522547885.

Adding to 13541220 its reverse (2214531), we get a palindrome (15755751).

The spelling of 13541220 in words is "thirteen million, five hundred forty-one thousand, two hundred twenty".