2173627820 has 192 divisors, whose sum is σ = 5998841856. Its totient is φ = 641986560.

The previous prime is 2173627793. The next prime is 2173627901. The reversal of 2173627820 is 287263712.

2173627820 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5043005 + ... + 5043435.

It is an arithmetic number, because the mean of its divisors is an integer number (31243968).

Almost surely, 2^2173627820 is an apocalyptic number.

2173627820 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 2173627820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2999420928).

2173627820 is an abundant number, since it is smaller than the sum of its proper divisors (3825214036).

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

2173627820 is a wasteful number, since it uses less digits than its factorization.

2173627820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 640 (or 638 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 38.

The square root of 2173627820 is about 46622.1816306359. The cubic root of 2173627820 is about 1295.3736582186.

The spelling of 2173627820 in words is "two billion, one hundred seventy-three million, six hundred twenty-seven thousand, eight hundred twenty".