2173429056 has 112 divisors (see below), whose sum is σ = 6104388096. Its totient is φ = 680116224.

The previous prime is 2173429051. The next prime is 2173429087. The reversal of 2173429056 is 6509243712.

It is a super-2 number, since 2×2173429056² = 9447587722930102272, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2173429051) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1980700 + ... + 1981796.

Almost surely, 2^2173429056 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2173429056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3052194048).

2173429056 is an abundant number, since it is smaller than the sum of its proper divisors (3930959040).

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

2173429056 is a wasteful number, since it uses less digits than its factorization.

2173429056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1736 (or 1726 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 39.

The square root of 2173429056 is about 46620.0499356232. The cubic root of 2173429056 is about 1295.3341725416.

The spelling of 2173429056 in words is "two billion, one hundred seventy-three million, four hundred twenty-nine thousand, fifty-six".