20220180 has 48 divisors (see below), whose sum is σ = 59599680. Its totient is φ = 5107968.

The previous prime is 20220173. The next prime is 20220217. The reversal of 20220180 is 8102202.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7729 + ... + 10008.

It is an arithmetic number, because the mean of its divisors is an integer number (1241660).

Almost surely, 2^20220180 is an apocalyptic number.

20220180 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20220180 is an abundant number, since it is smaller than the sum of its proper divisors (39379500).

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

20220180 is a wasteful number, since it uses less digits than its factorization.

20220180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17768 (or 17766 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 20220180 is about 4496.6854459702. The cubic root of 20220180 is about 272.4342292802.

Adding to 20220180 its reverse (8102202), we get a palindrome (28322382).

The spelling of 20220180 in words is "twenty million, two hundred twenty thousand, one hundred eighty".