2167725220 has 48 divisors (see below), whose sum is σ = 4719052800. Its totient is φ = 835551360.

The previous prime is 2167725191. The next prime is 2167725223. The reversal of 2167725220 is 225277612.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (2167725223) 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 15 ways as a sum of consecutive naturals, for example, 140866 + ... + 155494.

It is an arithmetic number, because the mean of its divisors is an integer number (98313600).

Almost surely, 2^2167725220 is an apocalyptic number.

2167725220 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 2167725220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2359526400).

2167725220 is an abundant number, since it is smaller than the sum of its proper divisors (2551327580).

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

2167725220 is a wasteful number, since it uses less digits than its factorization.

2167725220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14908 (or 14906 counting only the distinct ones).

The product of its (nonzero) digits is 23520, while the sum is 34.

The square root of 2167725220 is about 46558.8361108823. The cubic root of 2167725220 is about 1294.2000436056.

The spelling of 2167725220 in words is "two billion, one hundred sixty-seven million, seven hundred twenty-five thousand, two hundred twenty".