729115380 has 144 divisors (see below), whose sum is σ = 2676360960. Its totient is φ = 156847104.

The previous prime is 729115369. The next prime is 729115391. The reversal of 729115380 is 83511927.

It is an interprime number because it is at equal distance from previous prime (729115369) and next prime (729115391).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4401 + ... + 38439.

It is an arithmetic number, because the mean of its divisors is an integer number (18585840).

Almost surely, 2^729115380 is an apocalyptic number.

729115380 is a gapful number since it is divisible by the number (70) 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 729115380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1338180480).

729115380 is an abundant number, since it is smaller than the sum of its proper divisors (1947245580).

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

729115380 is a wasteful number, since it uses less digits than its factorization.

729115380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34078 (or 34073 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 36.

The square root of 729115380 is about 27002.1365821299. The cubic root of 729115380 is about 900.0474789767.

The spelling of 729115380 in words is "seven hundred twenty-nine million, one hundred fifteen thousand, three hundred eighty".