28149328433 has 8 divisors (see below), whose sum is σ = 29840711040. Its totient is φ = 26461894720.

The previous prime is 28149328429. The next prime is 28149328439. The reversal of 28149328433 is 33482394182.

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 28149328433 - 2² = 28149328429 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28149328439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 972533 + ... + 1001058.

It is an arithmetic number, because the mean of its divisors is an integer number (3730088880).

Almost surely, 2^28149328433 is an apocalyptic number.

It is an amenable number.

28149328433 is a deficient number, since it is larger than the sum of its proper divisors (1691382607).

28149328433 is a wasteful number, since it uses less digits than its factorization.

28149328433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1974447.

The product of its digits is 995328, while the sum is 47.

The spelling of 28149328433 in words is "twenty-eight billion, one hundred forty-nine million, three hundred twenty-eight thousand, four hundred thirty-three".