13660128 has 36 divisors (see below), whose sum is σ = 38846808. Its totient is φ = 4553280.

The previous prime is 13660123. The next prime is 13660147. The reversal of 13660128 is 82106631.

13660128 is a `hidden beast` number, since 1 + 36 + 601 + 28 = 666.

13660128 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13660123) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 23428 + ... + 24003.

It is an arithmetic number, because the mean of its divisors is an integer number (1079078).

Almost surely, 2^13660128 is an apocalyptic number.

13660128 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

13660128 is an abundant number, since it is smaller than the sum of its proper divisors (25186680).

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

13660128 is a wasteful number, since it uses less digits than its factorization.

13660128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47447 (or 47436 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 13660128 is about 3695.9610387557. The cubic root of 13660128 is about 239.0478945582.

Adding to 13660128 its reverse (82106631), we get a palindrome (95766759).

The spelling of 13660128 in words is "thirteen million, six hundred sixty thousand, one hundred twenty-eight".