180473940 has 96 divisors (see below), whose sum is σ = 579640320. Its totient is φ = 46569600.

The previous prime is 180473903. The next prime is 180473959. The reversal of 180473940 is 49374081.

It is a happy number.

180473940 is a `hidden beast` number, since 180 + 473 + 9 + 4 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 180473895 and 180473904.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11350 + ... + 22130.

It is an arithmetic number, because the mean of its divisors is an integer number (6037920).

Almost surely, 2^180473940 is an apocalyptic number.

180473940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 180473940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (289820160).

180473940 is an abundant number, since it is smaller than the sum of its proper divisors (399166380).

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

180473940 is a wasteful number, since it uses less digits than its factorization.

180473940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10830 (or 10822 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 180473940 is about 13434.0589547612. The cubic root of 180473940 is about 565.1167326092.

The spelling of 180473940 in words is "one hundred eighty million, four hundred seventy-three thousand, nine hundred forty".