8729628 has 24 divisors (see below), whose sum is σ = 20498688. Its totient is φ = 2891376.

The previous prime is 8729621. The next prime is 8729629. The reversal of 8729628 is 8269278.

It is a happy number.

It is a plaindrome in base 14.

It is a self number, because there is not a number n which added to its sum of digits gives 8729628.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8729621) 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, 276 + ... + 4187.

It is an arithmetic number, because the mean of its divisors is an integer number (854112).

Almost surely, 2^8729628 is an apocalyptic number.

It is an amenable number.

8729628 is an abundant number, since it is smaller than the sum of its proper divisors (11769060).

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

8729628 is a wasteful number, since it uses less digits than its factorization.

8729628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4633 (or 4631 counting only the distinct ones).

The product of its digits is 96768, while the sum is 42.

The square root of 8729628 is about 2954.5943884060. The cubic root of 8729628 is about 205.9042191486.

The spelling of 8729628 in words is "eight million, seven hundred twenty-nine thousand, six hundred twenty-eight".