28919004161 has 8 divisors (see below), whose sum is σ = 30182558784. Its totient is φ = 27655966800.

The previous prime is 28919004151. The next prime is 28919004197. The reversal of 28919004161 is 16140091982.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28919004161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28919004151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12815 + ... + 240836.

It is an arithmetic number, because the mean of its divisors is an integer number (3772819848).

Almost surely, 2^28919004161 is an apocalyptic number.

It is an amenable number.

28919004161 is a deficient number, since it is larger than the sum of its proper divisors (1263554623).

28919004161 is a wasteful number, since it uses less digits than its factorization.

28919004161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258631.

The product of its (nonzero) digits is 31104, while the sum is 41.

The spelling of 28919004161 in words is "twenty-eight billion, nine hundred nineteen million, four thousand, one hundred sixty-one".