27890891528 has 32 divisors (see below), whose sum is σ = 53491104000. Its totient is φ = 13627519872.

The previous prime is 27890891507. The next prime is 27890891531. The reversal of 27890891528 is 82519809872.

It is a Smith number, since the sum of its digits (59) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 185948 + ... + 300596.

It is an arithmetic number, because the mean of its divisors is an integer number (1671597000).

Almost surely, 2^27890891528 is an apocalyptic number.

It is an amenable number.

27890891528 is a deficient number, since it is larger than the sum of its proper divisors (25600212472).

27890891528 is a wasteful number, since it uses less digits than its factorization.

27890891528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115349 (or 115345 counting only the distinct ones).

The product of its (nonzero) digits is 5806080, while the sum is 59.

The spelling of 27890891528 in words is "twenty-seven billion, eight hundred ninety million, eight hundred ninety-one thousand, five hundred twenty-eight".