13351866 has 48 divisors (see below), whose sum is σ = 29992032. Its totient is φ = 3958240.

The previous prime is 13351853. The next prime is 13351867. The reversal of 13351866 is 66815331.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a nialpdrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13351867) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 38305 + ... + 38651.

It is an arithmetic number, because the mean of its divisors is an integer number (624834).

Almost surely, 2^13351866 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13351866, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14996016).

13351866 is an abundant number, since it is smaller than the sum of its proper divisors (16640166).

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

13351866 is a wasteful number, since it uses less digits than its factorization.

13351866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 427 (or 416 counting only the distinct ones).

The product of its digits is 12960, while the sum is 33.

The square root of 13351866 is about 3654.0205253939. The cubic root of 13351866 is about 237.2360339665.

It can be divided in two parts, 133518 and 66, that multiplied together give a palindrome (8812188).

The spelling of 13351866 in words is "thirteen million, three hundred fifty-one thousand, eight hundred sixty-six".