2176422220 has 36 divisors (see below), whose sum is σ = 5316690960. Its totient is φ = 746201568.

The previous prime is 2176422217. The next prime is 2176422221. The reversal of 2176422220 is 222246712.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is not an unprimeable number, because it can be changed into a prime (2176422221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1109440 + ... + 1111399.

It is an arithmetic number, because the mean of its divisors is an integer number (147685860).

Almost surely, 2^2176422220 is an apocalyptic number.

2176422220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2176422220 is an abundant number, since it is smaller than the sum of its proper divisors (3140268740).

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

2176422220 is a wasteful number, since it uses less digits than its factorization.

2176422220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2220862 (or 2220853 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 28.

The square root of 2176422220 is about 46652.1405725396. The cubic root of 2176422220 is about 1295.9285281357.

Adding to 2176422220 its reverse (222246712), we get a palindrome (2398668932).

The spelling of 2176422220 in words is "two billion, one hundred seventy-six million, four hundred twenty-two thousand, two hundred twenty".