729489378 has 8 divisors (see below), whose sum is σ = 1458978768. Its totient is φ = 243163124.

The previous prime is 729489361. The next prime is 729489379. The reversal of 729489378 is 873984927.

It is a sphenic number, since it is the product of 3 distinct primes.

729489378 is an admirable number.

It is a super-2 number, since 2×729489378² = 1064309505229653768, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (729489379) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60790776 + ... + 60790787.

It is an arithmetic number, because the mean of its divisors is an integer number (182372346).

Almost surely, 2^729489378 is an apocalyptic number.

729489378 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

729489378 is a wasteful number, since it uses less digits than its factorization.

729489378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121581568.

The product of its digits is 6096384, while the sum is 57.

The square root of 729489378 is about 27009.0610351415. The cubic root of 729489378 is about 900.2013450758.

The spelling of 729489378 in words is "seven hundred twenty-nine million, four hundred eighty-nine thousand, three hundred seventy-eight".