8729157 has 8 divisors (see below), whose sum is σ = 11666176. Its totient is φ = 5805792.

The previous prime is 8729141. The next prime is 8729173. The reversal of 8729157 is 7519278.

It is an interprime number because it is at equal distance from previous prime (8729141) and next prime (8729173).

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

It is not a de Polignac number, because 8729157 - 2⁴ = 8729141 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 (8729107) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1813 + ... + 4554.

It is an arithmetic number, because the mean of its divisors is an integer number (1458272).

Almost surely, 2^8729157 is an apocalyptic number.

It is an amenable number.

8729157 is a deficient number, since it is larger than the sum of its proper divisors (2937019).

8729157 is a wasteful number, since it uses less digits than its factorization.

8729157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6827.

The product of its digits is 35280, while the sum is 39.

The square root of 8729157 is about 2954.5146809586. The cubic root of 8729157 is about 205.9005159502.

The spelling of 8729157 in words is "eight million, seven hundred twenty-nine thousand, one hundred fifty-seven".