28324464181 has 8 divisors (see below), whose sum is σ = 30504993120. Its totient is φ = 26144181552.

The previous prime is 28324464173. The next prime is 28324464193. The reversal of 28324464181 is 18146442382.

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 28324464181 - 2³ = 28324464173 is a prime.

It is a super-2 number, since 2×28324464181² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28324464101) 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, 227586 + ... + 329308.

It is an arithmetic number, because the mean of its divisors is an integer number (3813124140).

Almost surely, 2^28324464181 is an apocalyptic number.

It is an amenable number.

28324464181 is a deficient number, since it is larger than the sum of its proper divisors (2180528939).

28324464181 is a wasteful number, since it uses less digits than its factorization.

28324464181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123155.

The product of its digits is 294912, while the sum is 43.

The spelling of 28324464181 in words is "twenty-eight billion, three hundred twenty-four million, four hundred sixty-four thousand, one hundred eighty-one".