28480720051 has 8 divisors (see below), whose sum is σ = 32714621280. Its totient is φ = 24288125568.

The previous prime is 28480720039. The next prime is 28480720217. The reversal of 28480720051 is 15002708482.

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

It is not a de Polignac number, because 28480720051 - 2⁵ = 28480720019 is a prime.

It is a super-2 number, since 2×28480720051² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28480720951) 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, 10325206 + ... + 10327963.

It is an arithmetic number, because the mean of its divisors is an integer number (4089327660).

Almost surely, 2^28480720051 is an apocalyptic number.

28480720051 is a deficient number, since it is larger than the sum of its proper divisors (4233901229).

28480720051 is a wasteful number, since it uses less digits than its factorization.

28480720051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20653373.

The product of its (nonzero) digits is 35840, while the sum is 37.

The spelling of 28480720051 in words is "twenty-eight billion, four hundred eighty million, seven hundred twenty thousand, fifty-one".