27884784468 has 24 divisors (see below), whose sum is σ = 67308101280. Its totient is φ = 8974413280.

The previous prime is 27884784461. The next prime is 27884784493. The reversal of 27884784468 is 86448748872.

It is a super-2 number, since 2×27884784468² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 27884784399 and 27884784408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27884784461) 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, 40063998 + ... + 40064693.

It is an arithmetic number, because the mean of its divisors is an integer number (2804504220).

Almost surely, 2^27884784468 is an apocalyptic number.

It is an amenable number.

27884784468 is an abundant number, since it is smaller than the sum of its proper divisors (39423316812).

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

27884784468 is a wasteful number, since it uses less digits than its factorization.

27884784468 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80128727 (or 80128725 counting only the distinct ones).

The product of its digits is 154140672, while the sum is 66.

The spelling of 27884784468 in words is "twenty-seven billion, eight hundred eighty-four million, seven hundred eighty-four thousand, four hundred sixty-eight".