181480856 has 96 divisors (see below), whose sum is σ = 390860400. Its totient is φ = 78693120.

The previous prime is 181480813. The next prime is 181480877. The reversal of 181480856 is 658084181.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 2975066 + ... + 2975126.

Almost surely, 2^181480856 is an apocalyptic number.

It is an amenable number.

181480856 is an abundant number, since it is smaller than the sum of its proper divisors (209379544).

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

181480856 is a wasteful number, since it uses less digits than its factorization.

181480856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169 (or 142 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 41.

The square root of 181480856 is about 13471.4830660919. The cubic root of 181480856 is about 566.1657669766.

The spelling of 181480856 in words is "one hundred eighty-one million, four hundred eighty thousand, eight hundred fifty-six".