12538548 has 36 divisors (see below), whose sum is σ = 34577088. Its totient is φ = 3799440.

The previous prime is 12538543. The next prime is 12538549. The reversal of 12538548 is 84583521.

It is a happy number.

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

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12538541) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15436 + ... + 16227.

Almost surely, 2^12538548 is an apocalyptic number.

12538548 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

12538548 is an abundant number, since it is smaller than the sum of its proper divisors (22038540).

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

12538548 is a wasteful number, since it uses less digits than its factorization.

12538548 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31684 (or 31679 counting only the distinct ones).

The product of its digits is 38400, while the sum is 36.

The square root of 12538548 is about 3540.9812199446. The cubic root of 12538548 is about 232.3177621560.

It can be divided in two parts, 1253 and 8548, that added together give a square (9801 = 99²).

The spelling of 12538548 in words is "twelve million, five hundred thirty-eight thousand, five hundred forty-eight".