13152220 has 48 divisors (see below), whose sum is σ = 29611008. Its totient is φ = 4889600.

The previous prime is 13152193. The next prime is 13152229. The reversal of 13152220 is 2225131.

13152220 = T₄₅₉ + T₄₆₀ + ... + T₅₅₉.

It is a junction number, because it is equal to n+sod(n) for n = 13152194 and 13152203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13152229) 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, 34149 + ... + 34531.

It is an arithmetic number, because the mean of its divisors is an integer number (616896).

Almost surely, 2^13152220 is an apocalyptic number.

13152220 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 13152220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14805504).

13152220 is an abundant number, since it is smaller than the sum of its proper divisors (16458788).

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

13152220 is a wasteful number, since it uses less digits than its factorization.

13152220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 510 (or 508 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 13152220 is about 3626.5989577013. The cubic root of 13152220 is about 236.0476538836.

Adding to 13152220 its reverse (2225131), we get a palindrome (15377351).

The spelling of 13152220 in words is "thirteen million, one hundred fifty-two thousand, two hundred twenty".