180938420 has 24 divisors (see below), whose sum is σ = 409199784. Its totient is φ = 66807936.

The previous prime is 180938419. The next prime is 180938431. The reversal of 180938420 is 24839081.

It is a happy number.

180938420 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 41036836 + 139901584 = 6406^2 + 11828^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 347699 + ... + 348218.

It is an arithmetic number, because the mean of its divisors is an integer number (17049991).

Almost surely, 2^180938420 is an apocalyptic number.

180938420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

180938420 is an abundant number, since it is smaller than the sum of its proper divisors (228261364).

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

180938420 is a wasteful number, since it uses less digits than its factorization.

180938420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 695939 (or 695937 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 35.

The square root of 180938420 is about 13451.3352497066. The cubic root of 180938420 is about 565.6011249042.

The spelling of 180938420 in words is "one hundred eighty million, nine hundred thirty-eight thousand, four hundred twenty".