2168072620 has 72 divisors (see below), whose sum is σ = 5425570080. Its totient is φ = 725195520.

The previous prime is 2168072597. The next prime is 2168072623. The reversal of 2168072620 is 262708612.

It is not an unprimeable number, because it can be changed into a prime (2168072623) 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 23 ways as a sum of consecutive naturals, for example, 13201 + ... + 67159.

It is an arithmetic number, because the mean of its divisors is an integer number (75355140).

Almost surely, 2^2168072620 is an apocalyptic number.

2168072620 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 2168072620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2712785040).

2168072620 is an abundant number, since it is smaller than the sum of its proper divisors (3257497460).

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

2168072620 is a wasteful number, since it uses less digits than its factorization.

2168072620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54023 (or 54014 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 2168072620 is about 46562.5667247844. The cubic root of 2168072620 is about 1294.2691761499.

The spelling of 2168072620 in words is "two billion, one hundred sixty-eight million, seventy-two thousand, six hundred twenty".