12538928 has 20 divisors (see below), whose sum is σ = 25723800. Its totient is φ = 5900544.

The previous prime is 12538921. The next prime is 12538931. The reversal of 12538928 is 82983521.

12538928 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 12538891 and 12538900.

It is not an unprimeable number, because it can be changed into a prime (12538921) 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, 22778 + ... + 23321.

It is an arithmetic number, because the mean of its divisors is an integer number (1286190).

Almost surely, 2^12538928 is an apocalyptic number.

It is an amenable number.

12538928 is an abundant number, since it is smaller than the sum of its proper divisors (13184872).

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

12538928 is a wasteful number, since it uses less digits than its factorization.

12538928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46124 (or 46118 counting only the distinct ones).

The product of its digits is 34560, while the sum is 38.

The square root of 12538928 is about 3541.0348769816. The cubic root of 12538928 is about 232.3201090481.

The spelling of 12538928 in words is "twelve million, five hundred thirty-eight thousand, nine hundred twenty-eight".