181078872 has 32 divisors (see below), whose sum is σ = 487520880. Its totient is φ = 55716480.

The previous prime is 181078831. The next prime is 181078879. The reversal of 181078872 is 278870181.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (181078879) 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, 289879 + ... + 290502.

Almost surely, 2^181078872 is an apocalyptic number.

181078872 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

181078872 is an abundant number, since it is smaller than the sum of its proper divisors (306442008).

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

181078872 is a wasteful number, since it uses less digits than its factorization.

181078872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 580403 (or 580399 counting only the distinct ones).

The product of its (nonzero) digits is 50176, while the sum is 42.

The square root of 181078872 is about 13456.5549826098. The cubic root of 181078872 is about 565.7474348351.

The spelling of 181078872 in words is "one hundred eighty-one million, seventy-eight thousand, eight hundred seventy-two".