8181880 has 32 divisors (see below), whose sum is σ = 21039840. Its totient is φ = 2805120.

The previous prime is 8181871. The next prime is 8181881. The reversal of 8181880 is 881818.

It is a Smith number, since the sum of its digits (34) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8181881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14331 + ... + 14890.

It is an arithmetic number, because the mean of its divisors is an integer number (657495).

Almost surely, 2^8181880 is an apocalyptic number.

It is an amenable number.

8181880 is an abundant number, since it is smaller than the sum of its proper divisors (12857960).

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

8181880 is a wasteful number, since it uses less digits than its factorization.

8181880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29239 (or 29235 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 34.

The square root of 8181880 is about 2860.3985736257. The cubic root of 8181880 is about 201.5043233540.

The spelling of 8181880 in words is "eight million, one hundred eighty-one thousand, eight hundred eighty".