8728351 has 4 divisors (see below), whose sum is σ = 8818432. Its totient is φ = 8638272.

The previous prime is 8728331. The next prime is 8728373. The reversal of 8728351 is 1538278.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8728351 is a prime.

It is a super-2 number, since 2×8728351² = 152368222358402, which contains 22 as substring.

It is a Duffinian number.

8728351 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8728331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44895 + ... + 45088.

It is an arithmetic number, because the mean of its divisors is an integer number (2204608).

Almost surely, 2^8728351 is an apocalyptic number.

8728351 is a deficient number, since it is larger than the sum of its proper divisors (90081).

8728351 is an equidigital number, since it uses as much as digits as its factorization.

8728351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90080.

The product of its digits is 13440, while the sum is 34.

The square root of 8728351 is about 2954.3782763891. The cubic root of 8728351 is about 205.8941785332.

The spelling of 8728351 in words is "eight million, seven hundred twenty-eight thousand, three hundred fifty-one".