12748428 has 180 divisors, whose sum is σ = 42871752. Its totient is φ = 3265920.

The previous prime is 12748427. The next prime is 12748447. The reversal of 12748428 is 82484721.

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

It is a junction number, because it is equal to n+sod(n) for n = 12748392 and 12748401.

It is not an unprimeable number, because it can be changed into a prime (12748427) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 174600 + ... + 174672.

Almost surely, 2^12748428 is an apocalyptic number.

12748428 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12748428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21435876).

12748428 is an abundant number, since it is smaller than the sum of its proper divisors (30123324).

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

12748428 is a wasteful number, since it uses less digits than its factorization.

12748428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114 (or 96 counting only the distinct ones).

The product of its digits is 28672, while the sum is 36.

The square root of 12748428 is about 3570.4940834568. The cubic root of 12748428 is about 233.6068348457.

The spelling of 12748428 in words is "twelve million, seven hundred forty-eight thousand, four hundred twenty-eight".