8728501 has 4 divisors (see below), whose sum is σ = 8746912. Its totient is φ = 8710092.

The previous prime is 8728483. The next prime is 8728513. The reversal of 8728501 is 1058278.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 8728501 - 2⁷ = 8728373 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 (8728571) 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, 8475 + ... + 9448.

It is an arithmetic number, because the mean of its divisors is an integer number (2186728).

Almost surely, 2^8728501 is an apocalyptic number.

It is an amenable number.

8728501 is a deficient number, since it is larger than the sum of its proper divisors (18411).

8728501 is a wasteful number, since it uses less digits than its factorization.

8728501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18410.

The product of its (nonzero) digits is 4480, while the sum is 31.

The square root of 8728501 is about 2954.4036623319. The cubic root of 8728501 is about 205.8953579828.

It can be divided in two parts, 8728 and 501, that added together give a palindrome (9229).

The spelling of 8728501 in words is "eight million, seven hundred twenty-eight thousand, five hundred one".