12728028379 has 8 divisors (see below), whose sum is σ = 14260395888. Its totient is φ = 11258206560.

The previous prime is 12728028293. The next prime is 12728028403. The reversal of 12728028379 is 97382082721.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12728028379 - 2⁹ = 12728027867 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12728020379) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15635992 + ... + 15636805.

It is an arithmetic number, because the mean of its divisors is an integer number (1782549486).

Almost surely, 2^12728028379 is an apocalyptic number.

12728028379 is a deficient number, since it is larger than the sum of its proper divisors (1532367509).

12728028379 is a wasteful number, since it uses less digits than its factorization.

12728028379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31272845.

The product of its (nonzero) digits is 677376, while the sum is 49.

The spelling of 12728028379 in words is "twelve billion, seven hundred twenty-eight million, twenty-eight thousand, three hundred seventy-nine".