20000180 has 24 divisors (see below), whose sum is σ = 42156072. Its totient is φ = 7970432.

The previous prime is 20000171. The next prime is 20000213. The reversal of 20000180 is 8100002.

It can be written as a sum of positive squares in 4 ways, for example, as 11682724 + 8317456 = 3418^2 + 2884^2 .

20000180 is a modest number, since divided by 180 gives 20 as remainder.

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, 4154 + ... + 7566.

It is an arithmetic number, because the mean of its divisors is an integer number (1756503).

Almost surely, 2^20000180 is an apocalyptic number.

20000180 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20000180 is an abundant number, since it is smaller than the sum of its proper divisors (22155892).

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

20000180 is a wasteful number, since it uses less digits than its factorization.

20000180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3715 (or 3713 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 20000180 is about 4472.1560795661. The cubic root of 20000180 is about 271.4425759823.

Adding to 20000180 its reverse (8100002), we get a palindrome (28100182).

The spelling of 20000180 in words is "twenty million, one hundred eighty", and thus it is an aban number.