729702168 has 64 divisors (see below), whose sum is σ = 1967347200. Its totient is φ = 224208000.

The previous prime is 729702167. The next prime is 729702173. The reversal of 729702168 is 861207927.

It is a Cunningham number, because it is equal to 27013²-1.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (729702167) 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, 323043 + ... + 325293.

It is an arithmetic number, because the mean of its divisors is an integer number (30739800).

Almost surely, 2^729702168 is an apocalyptic number.

729702168 is a gapful number since it is divisible by the number (78) formed by its first and last digit.

It is an amenable number.

729702168 is an abundant number, since it is smaller than the sum of its proper divisors (1237645032).

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

729702168 is a wasteful number, since it uses less digits than its factorization.

729702168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3312 (or 3308 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 42.

The square root of 729702168 is about 27012.9999814904. Note that the first 4 decimals coincide. The cubic root of 729702168 is about 900.2888653001.

The spelling of 729702168 in words is "seven hundred twenty-nine million, seven hundred two thousand, one hundred sixty-eight".