180382428 has 144 divisors (see below), whose sum is σ = 508784640. Its totient is φ = 53654400.

The previous prime is 180382421. The next prime is 180382439. The reversal of 180382428 is 824283081.

It is a happy number.

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 = 180382392 and 180382401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (180382421) 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 47 ways as a sum of consecutive naturals, for example, 996498 + ... + 996678.

Almost surely, 2^180382428 is an apocalyptic number.

180382428 is a gapful number since it is divisible by the number (18) 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 180382428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (254392320).

180382428 is an abundant number, since it is smaller than the sum of its proper divisors (328402212).

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

180382428 is a wasteful number, since it uses less digits than its factorization.

180382428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 288 (or 283 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 36.

The square root of 180382428 is about 13430.6525530221. The cubic root of 180382428 is about 565.0211995074.

The spelling of 180382428 in words is "one hundred eighty million, three hundred eighty-two thousand, four hundred twenty-eight".