28005275555530 has 64 divisors (see below), whose sum is σ = 62453334117888. Its totient is φ = 8804511302400.

The previous prime is 28005275555527. The next prime is 28005275555531. The reversal of 28005275555530 is 3555557250082.

It is a happy number.

It is a super-3 number, since 3×28005275555530³ (a number of 41 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (28005275555531) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 101766657 + ... + 102041476.

It is an arithmetic number, because the mean of its divisors is an integer number (975833345592).

Almost surely, 2^{28005275555530} is an apocalyptic number.

28005275555530 is an abundant number, since it is smaller than the sum of its proper divisors (34448058562358).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28005275555530 is a wasteful number, since it uses less digits than its factorization.

28005275555530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203808311.

The product of its (nonzero) digits is 10500000, while the sum is 52.

The spelling of 28005275555530 in words is "twenty-eight trillion, five billion, two hundred seventy-five million, five hundred fifty-five thousand, five hundred thirty".