13550128 has 20 divisors (see below), whose sum is σ = 27395568. Its totient is φ = 6480320.

The previous prime is 13550123. The next prime is 13550129. The reversal of 13550128 is 82105531.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (13550123) 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, 18043 + ... + 18778.

Almost surely, 2^13550128 is an apocalyptic number.

It is an amenable number.

13550128 is an abundant number, since it is smaller than the sum of its proper divisors (13845440).

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

13550128 is a wasteful number, since it uses less digits than its factorization.

13550128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36852 (or 36846 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 25.

The square root of 13550128 is about 3681.0498502465. The cubic root of 13550128 is about 238.4045094713.

Adding to 13550128 its reverse (82105531), we get a palindrome (95655659).

The spelling of 13550128 in words is "thirteen million, five hundred fifty thousand, one hundred twenty-eight".