729157 has 8 divisors (see below), whose sum is σ = 856800. Its totient is φ = 611760.

The previous prime is 729143. The next prime is 729173. The reversal of 729157 is 751927.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-729157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (729187) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2407 + ... + 2692.

It is an arithmetic number, because the mean of its divisors is an integer number (107100).

2⁷²⁹¹⁵⁷ is an apocalyptic number.

It is an amenable number.

729157 is a deficient number, since it is larger than the sum of its proper divisors (127643).

729157 is a wasteful number, since it uses less digits than its factorization.

729157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5123.

The product of its digits is 4410, while the sum is 31.

The square root of 729157 is about 853.9069035908. The cubic root of 729157 is about 90.0064604416.

It can be divided in two parts, 72 and 9157, that added together give a palindrome (9229).

The spelling of 729157 in words is "seven hundred twenty-nine thousand, one hundred fifty-seven".