181230620 has 12 divisors (see below), whose sum is σ = 380584344. Its totient is φ = 72492240.

The previous prime is 181230617. The next prime is 181230641. The reversal of 181230620 is 26032181.

181230620 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4530746 + ... + 4530785.

It is an arithmetic number, because the mean of its divisors is an integer number (31715362).

Almost surely, 2^181230620 is an apocalyptic number.

181230620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

181230620 is an abundant number, since it is smaller than the sum of its proper divisors (199353724).

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

181230620 is a wasteful number, since it uses less digits than its factorization.

181230620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9061540 (or 9061538 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 181230620 is about 13462.1922434647. The cubic root of 181230620 is about 565.9054268936.

The spelling of 181230620 in words is "one hundred eighty-one million, two hundred thirty thousand, six hundred twenty".