28030030555 has 32 divisors (see below), whose sum is σ = 34584061248. Its totient is φ = 21802176000.

The previous prime is 28030030549. The next prime is 28030030571. The reversal of 28030030555 is 55503003082.

It is not a de Polignac number, because 28030030555 - 2³ = 28030030547 is a prime.

It is a super-2 number, since 2×28030030555² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12619345 + ... + 12621565.

It is an arithmetic number, because the mean of its divisors is an integer number (1080751914).

Almost surely, 2^28030030555 is an apocalyptic number.

28030030555 is a deficient number, since it is larger than the sum of its proper divisors (6554030693).

28030030555 is a wasteful number, since it uses less digits than its factorization.

28030030555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2767.

The product of its (nonzero) digits is 18000, while the sum is 31.

The spelling of 28030030555 in words is "twenty-eight billion, thirty million, thirty thousand, five hundred fifty-five".