20190180 has 24 divisors (see below), whose sum is σ = 56532672. Its totient is φ = 5384032.

The previous prime is 20190173. The next prime is 20190187. The reversal of 20190180 is 8109102.

It is an interprime number because it is at equal distance from previous prime (20190173) and next prime (20190187).

It is not an unprimeable number, because it can be changed into a prime (20190187) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 168192 + ... + 168311.

It is an arithmetic number, because the mean of its divisors is an integer number (2355528).

Almost surely, 2^20190180 is an apocalyptic number.

20190180 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20190180 is an abundant number, since it is smaller than the sum of its proper divisors (36342492).

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

20190180 is a wasteful number, since it uses less digits than its factorization.

20190180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 336515 (or 336513 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 21.

The square root of 20190180 is about 4493.3484173832. The cubic root of 20190180 is about 272.2994287619.

Adding to 20190180 its reverse (8109102), we get a palindrome (28299282).

The spelling of 20190180 in words is "twenty million, one hundred ninety thousand, one hundred eighty".