8621628 has 24 divisors (see below), whose sum is σ = 20238288. Its totient is φ = 2856576.

The previous prime is 8621623. The next prime is 8621653. The reversal of 8621628 is 8261268.

8621628 is a nontrivial binomial coefficient, being equal to C(4153, 2).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8621623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1 + ... + 4152.

It is an arithmetic number, because the mean of its divisors is an integer number (843262).

Almost surely, 2^8621628 is an apocalyptic number.

8621628 is the 4152-nd triangular number.

It is an amenable number.

8621628 is an abundant number, since it is smaller than the sum of its proper divisors (11616660).

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

8621628 is a wasteful number, since it uses less digits than its factorization.

8621628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4333 (or 4331 counting only the distinct ones).

The product of its digits is 9216, while the sum is 33.

The square root of 8621628 is about 2936.2608875916. The cubic root of 8621628 is about 205.0515674357.

The spelling of 8621628 in words is "eight million, six hundred twenty-one thousand, six hundred twenty-eight".