28328005555 has 8 divisors (see below), whose sum is σ = 34021546272. Its totient is φ = 22643778048.

The previous prime is 28328005553. The next prime is 28328005567. The reversal of 28328005555 is 55550082382.

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 28328005555 - 2¹ = 28328005553 is a prime.

It is a super-2 number, since 2×28328005555² (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 (28328005553) 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, 2321607 + ... + 2333776.

It is an arithmetic number, because the mean of its divisors is an integer number (4252693284).

Almost surely, 2^28328005555 is an apocalyptic number.

28328005555 is a deficient number, since it is larger than the sum of its proper divisors (5693540717).

28328005555 is a wasteful number, since it uses less digits than its factorization.

28328005555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4656605.

The product of its (nonzero) digits is 480000, while the sum is 43.

The spelling of 28328005555 in words is "twenty-eight billion, three hundred twenty-eight million, five thousand, five hundred fifty-five".