13220608 has 36 divisors (see below), whose sum is σ = 27025768. Its totient is φ = 6451200.

The previous prime is 13220587. The next prime is 13220609. The reversal of 13220608 is 80602231.

13220608 is nontrivially palindromic in base 7.

It is not an unprimeable number, because it can be changed into a prime (13220609) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10408 + ... + 11608.

Almost surely, 2^13220608 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13220608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13512884).

13220608 is an abundant number, since it is smaller than the sum of its proper divisors (13805160).

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

13220608 is an equidigital number, since it uses as much as digits as its factorization.

13220608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1260 (or 1246 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 13220608 is about 3636.0154015075. The cubic root of 13220608 is about 236.4560748713.

Adding to 13220608 its reverse (80602231), we get a palindrome (93822839).

The spelling of 13220608 in words is "thirteen million, two hundred twenty thousand, six hundred eight".