12038728 has 16 divisors (see below), whose sum is σ = 24309180. Its totient is φ = 5556288.

The previous prime is 12038717. The next prime is 12038749. The reversal of 12038728 is 82783021.

12038728 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 11573604 + 465124 = 3402^2 + 682^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 12038728.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57775 + ... + 57982.

Almost surely, 2^12038728 is an apocalyptic number.

It is an amenable number.

12038728 is an abundant number, since it is smaller than the sum of its proper divisors (12270452).

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

12038728 is a wasteful number, since it uses less digits than its factorization.

12038728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115776 (or 115772 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 31.

The square root of 12038728 is about 3469.6870175853. The cubic root of 12038728 is about 229.1888756584.

The spelling of 12038728 in words is "twelve million, thirty-eight thousand, seven hundred twenty-eight".