12149728 has 12 divisors (see below), whose sum is σ = 23919840. Its totient is φ = 6074848.

The previous prime is 12149723. The next prime is 12149741. The reversal of 12149728 is 82794121.

12149728 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 12149693 and 12149702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12149723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 189808 + ... + 189871.

It is an arithmetic number, because the mean of its divisors is an integer number (1993320).

Almost surely, 2^12149728 is an apocalyptic number.

It is an amenable number.

12149728 is a deficient number, since it is larger than the sum of its proper divisors (11770112).

12149728 is an equidigital number, since it uses as much as digits as its factorization.

12149728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 379689 (or 379681 counting only the distinct ones).

The product of its digits is 8064, while the sum is 34.

The square root of 12149728 is about 3485.6459946472. The cubic root of 12149728 is about 229.8911141813.

The spelling of 12149728 in words is "twelve million, one hundred forty-nine thousand, seven hundred twenty-eight".