729388 has 24 divisors (see below), whose sum is σ = 1414224. Its totient is φ = 329120.

The previous prime is 729373. The next prime is 729389. The reversal of 729388 is 883927.

It is a plaindrome in base 6.

It is not an unprimeable number, because it can be changed into a prime (729389) by changing a digit.

729388 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5256 + ... + 5392.

It is an arithmetic number, because the mean of its divisors is an integer number (58926).

2⁷²⁹³⁸⁸ is an apocalyptic number.

It is an amenable number.

729388 is a deficient number, since it is larger than the sum of its proper divisors (684836).

729388 is a wasteful number, since it uses less digits than its factorization.

729388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174 (or 150 counting only the distinct ones).

The product of its digits is 24192, while the sum is 37.

The square root of 729388 is about 854.0421535264. The cubic root of 729388 is about 90.0159642463.

It can be divided in two parts, 7293 and 88, that added together give a triangular number (7381 = T₁₂₁).

The spelling of 729388 in words is "seven hundred twenty-nine thousand, three hundred eighty-eight".