2171934320 has 20 divisors (see below), whose sum is σ = 5049747480. Its totient is φ = 868773696.

The previous prime is 2171934319. The next prime is 2171934337. The reversal of 2171934320 is 234391712.

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 13574510 + ... + 13574669.

It is an arithmetic number, because the mean of its divisors is an integer number (252487374).

Almost surely, 2^2171934320 is an apocalyptic number.

2171934320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2171934320 is an abundant number, since it is smaller than the sum of its proper divisors (2877813160).

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

2171934320 is a wasteful number, since it uses less digits than its factorization.

2171934320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27149192 (or 27149186 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 32.

The square root of 2171934320 is about 46604.0161359512. The cubic root of 2171934320 is about 1295.0371569965.

The spelling of 2171934320 in words is "two billion, one hundred seventy-one million, nine hundred thirty-four thousand, three hundred twenty".