28330129 has 8 divisors (see below), whose sum is σ = 29367360. Its totient is φ = 27296976.

The previous prime is 28330103. The next prime is 28330147. The reversal of 28330129 is 92103382.

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 28330129 - 2¹¹ = 28328081 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28330097 and 28330106.

It is not an unprimeable number, because it can be changed into a prime (28330229) 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, 23274 + ... + 24460.

It is an arithmetic number, because the mean of its divisors is an integer number (3670920).

Almost surely, 2^28330129 is an apocalyptic number.

28330129 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

28330129 is a deficient number, since it is larger than the sum of its proper divisors (1037231).

28330129 is a wasteful number, since it uses less digits than its factorization.

28330129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2039.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 28330129 is about 5322.6054710076. The cubic root of 28330129 is about 304.8476494338.

The spelling of 28330129 in words is "twenty-eight million, three hundred thirty thousand, one hundred twenty-nine".