27823684880 has 20 divisors (see below), whose sum is σ = 64690067532. Its totient is φ = 11129473920.

The previous prime is 27823684879. The next prime is 27823684909. The reversal of 27823684880 is 8848632872.

It can be written as a sum of positive squares in 2 ways, for example, as 20452432144 + 7371252736 = 143012^2 + 85856^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-2 number, since 2×27823684880² (a number of 22 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (56) 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 3 ways as a sum of consecutive naturals, for example, 173897951 + ... + 173898110.

Almost surely, 2^27823684880 is an apocalyptic number.

27823684880 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27823684880 is an abundant number, since it is smaller than the sum of its proper divisors (36866382652).

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

27823684880 is a wasteful number, since it uses less digits than its factorization.

27823684880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 347796074 (or 347796068 counting only the distinct ones).

The product of its (nonzero) digits is 8257536, while the sum is 56.

The spelling of 27823684880 in words is "twenty-seven billion, eight hundred twenty-three million, six hundred eighty-four thousand, eight hundred eighty".