28048645155 has 64 divisors (see below), whose sum is σ = 47252975616. Its totient is φ = 14188608000.

The previous prime is 28048645147. The next prime is 28048645159. The reversal of 28048645155 is 55154684082.

It is not a de Polignac number, because 28048645155 - 2³ = 28048645147 is a prime.

It is a super-2 number, since 2×28048645155² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28048645159) 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 63 ways as a sum of consecutive naturals, for example, 8706445 + ... + 8709665.

It is an arithmetic number, because the mean of its divisors is an integer number (738327744).

Almost surely, 2^28048645155 is an apocalyptic number.

28048645155 is a deficient number, since it is larger than the sum of its proper divisors (19204330461).

28048645155 is a wasteful number, since it uses less digits than its factorization.

28048645155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3628.

The product of its (nonzero) digits is 1536000, while the sum is 48.

The spelling of 28048645155 in words is "twenty-eight billion, forty-eight million, six hundred forty-five thousand, one hundred fifty-five".