729156 has 12 divisors (see below), whose sum is σ = 1701392. Its totient is φ = 243048.

The previous prime is 729143. The next prime is 729173. The reversal of 729156 is 651927.

729156 = T₁₈₃ + T₁₈₄ + ... + T₂₁₈.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

729156 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 3 ways as a sum of consecutive naturals, for example, 30370 + ... + 30393.

2⁷²⁹¹⁵⁶ is an apocalyptic number.

It is an amenable number.

729156 is an abundant number, since it is smaller than the sum of its proper divisors (972236).

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

729156 is a wasteful number, since it uses less digits than its factorization.

729156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60770 (or 60768 counting only the distinct ones).

The product of its digits is 3780, while the sum is 30.

The square root of 729156 is about 853.9063180467. The cubic root of 729156 is about 90.0064192952.

The spelling of 729156 in words is "seven hundred twenty-nine thousand, one hundred fifty-six".