729227342880 has 144 divisors (see below), whose sum is σ = 2489093530560. Its totient is φ = 194413330944.

The previous prime is 729227342849. The next prime is 729227342887. The reversal of 729227342880 is 88243722927.

729227342880 is a `hidden beast` number, since 7 + 2 + 92 + 273 + 4 + 288 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is not an unprimeable number, because it can be changed into a prime (729227342887) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6073509 + ... + 6192411.

It is an arithmetic number, because the mean of its divisors is an integer number (17285371740).

Almost surely, 2^729227342880 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 729227342880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1244546765280).

729227342880 is an abundant number, since it is smaller than the sum of its proper divisors (1759866187680).

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

729227342880 is a wasteful number, since it uses less digits than its factorization.

729227342880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123183 (or 123172 counting only the distinct ones).

The product of its (nonzero) digits is 5419008, while the sum is 54.

The spelling of 729227342880 in words is "seven hundred twenty-nine billion, two hundred twenty-seven million, three hundred forty-two thousand, eight hundred eighty".