13651968 has 104 divisors (see below), whose sum is σ = 40103136. Its totient is φ = 4096000.

The previous prime is 13651943. The next prime is 13651973. The reversal of 13651968 is 86915631.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 135118 + ... + 135218.

Almost surely, 2^13651968 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 13651968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20051568).

13651968 is an abundant number, since it is smaller than the sum of its proper divisors (26451168).

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

13651968 is a wasteful number, since it uses less digits than its factorization.

13651968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139 (or 117 counting only the distinct ones).

The product of its digits is 38880, while the sum is 39.

The square root of 13651968 is about 3694.8569661084. The cubic root of 13651968 is about 239.0002859424. Note that the first 3 decimals are identical.

It can be divided in two parts, 1365 and 1968, that added together give a palindrome (3333).

The spelling of 13651968 in words is "thirteen million, six hundred fifty-one thousand, nine hundred sixty-eight".