22020180 has 192 divisors, whose sum is σ = 78650880. Its totient is φ = 4478976.

The previous prime is 22020169. The next prime is 22020181. The reversal of 22020180 is 8102022.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22020181) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 201966 + ... + 202074.

It is an arithmetic number, because the mean of its divisors is an integer number (409640).

Almost surely, 2^22020180 is an apocalyptic number.

22020180 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22020180, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39325440).

22020180 is an abundant number, since it is smaller than the sum of its proper divisors (56630700).

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

22020180 is a wasteful number, since it uses less digits than its factorization.

22020180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178 (or 176 counting only the distinct ones).

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

The square root of 22020180 is about 4692.5664619694. The cubic root of 22020180 is about 280.2895813586.

The spelling of 22020180 in words is "twenty-two million, twenty thousand, one hundred eighty".