180421850 has 48 divisors (see below), whose sum is σ = 406099008. Its totient is φ = 58218240.

The previous prime is 180421837. The next prime is 180421883. The reversal of 180421850 is 58124081.

It is a Curzon 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 23 ways as a sum of consecutive naturals, for example, 9212 + ... + 21111.

It is an arithmetic number, because the mean of its divisors is an integer number (8460396).

Almost surely, 2^180421850 is an apocalyptic number.

180421850 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

180421850 is an abundant number, since it is smaller than the sum of its proper divisors (225677158).

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

180421850 is a wasteful number, since it uses less digits than its factorization.

180421850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30359 (or 30354 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 29.

The square root of 180421850 is about 13432.1200858241. The cubic root of 180421850 is about 565.0623576984.

The spelling of 180421850 in words is "one hundred eighty million, four hundred twenty-one thousand, eight hundred fifty".