180198020 has 12 divisors (see below), whose sum is σ = 378415884. Its totient is φ = 72079200.

The previous prime is 180198019. The next prime is 180198023. The reversal of 180198020 is 20891081.

180198020 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 2 ways, for example, as 107163904 + 73034116 = 10352^2 + 8546^2 .

It is not an unprimeable number, because it can be changed into a prime (180198023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4504931 + ... + 4504970.

It is an arithmetic number, because the mean of its divisors is an integer number (31534657).

Almost surely, 2^180198020 is an apocalyptic number.

180198020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

180198020 is an abundant number, since it is smaller than the sum of its proper divisors (198217864).

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

180198020 is a wasteful number, since it uses less digits than its factorization.

180198020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9009910 (or 9009908 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 29.

The square root of 180198020 is about 13423.7856061545. The cubic root of 180198020 is about 564.8285902877.

The spelling of 180198020 in words is "one hundred eighty million, one hundred ninety-eight thousand, twenty".