13525428 has 24 divisors (see below), whose sum is σ = 36068032. Its totient is φ = 3864384.

The previous prime is 13525411. The next prime is 13525453. The reversal of 13525428 is 82452531.

13525428 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 13525395 and 13525404.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80425 + ... + 80592.

Almost surely, 2^13525428 is an apocalyptic number.

It is an amenable number.

13525428 is an abundant number, since it is smaller than the sum of its proper divisors (22542604).

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

13525428 is a wasteful number, since it uses less digits than its factorization.

13525428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161031 (or 161029 counting only the distinct ones).

The product of its digits is 9600, while the sum is 30.

The square root of 13525428 is about 3677.6932987948. The cubic root of 13525428 is about 238.2595619343.

Adding to 13525428 its reverse (82452531), we get a palindrome (95977959).

The spelling of 13525428 in words is "thirteen million, five hundred twenty-five thousand, four hundred twenty-eight".