13153220 has 12 divisors (see below), whose sum is σ = 27621804. Its totient is φ = 5261280.

The previous prime is 13153183. The next prime is 13153229. The reversal of 13153220 is 2235131.

It can be written as a sum of positive squares in 2 ways, for example, as 8099716 + 5053504 = 2846^2 + 2248^2 .

It is not an unprimeable number, because it can be changed into a prime (13153229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 328811 + ... + 328850.

It is an arithmetic number, because the mean of its divisors is an integer number (2301817).

Almost surely, 2^13153220 is an apocalyptic number.

13153220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13153220 is an abundant number, since it is smaller than the sum of its proper divisors (14468584).

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

13153220 is a wasteful number, since it uses less digits than its factorization.

13153220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 657670 (or 657668 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 13153220 is about 3626.7368253018. The cubic root of 13153220 is about 236.0536361860.

Adding to 13153220 its reverse (2235131), we get a palindrome (15388351).

The spelling of 13153220 in words is "thirteen million, one hundred fifty-three thousand, two hundred twenty".