13670208 has 98 divisors (see below), whose sum is σ = 40810434. Its totient is φ = 4541184.

The previous prime is 13670207. The next prime is 13670219. The reversal of 13670208 is 80207631.

It can be written as a sum of positive squares in only one way, i.e., 13483584 + 186624 = 3672^2 + 432^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13670207) by changing a digit.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 46510 + ... + 46802.

It is an arithmetic number, because the mean of its divisors is an integer number (416433).

Almost surely, 2^13670208 is an apocalyptic number.

13670208 is a gapful number since it is divisible by the number (18) 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 13670208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20405217).

13670208 is an abundant number, since it is smaller than the sum of its proper divisors (27140226).

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

13670208 is an frugal number, since it uses more digits than its factorization.

13670208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 323 (or 298 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 13670208 is about 3697.3244380227. The cubic root of 13670208 is about 239.1066790324.

Adding to 13670208 its reverse (80207631), we get a palindrome (93877839).

The spelling of 13670208 in words is "thirteen million, six hundred seventy thousand, two hundred eight".