9861628 has 12 divisors (see below), whose sum is σ = 19723312. Its totient is φ = 4226400.

The previous prime is 9861619. The next prime is 9861629. The reversal of 9861628 is 8261689.

9861628 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9861629) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 176073 + ... + 176128.

Almost surely, 2^9861628 is an apocalyptic number.

It is an amenable number.

9861628 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

9861628 is a wasteful number, since it uses less digits than its factorization.

9861628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 352212 (or 352210 counting only the distinct ones).

The product of its digits is 41472, while the sum is 40.

The square root of 9861628 is about 3140.3229133323. The cubic root of 9861628 is about 214.4451385896.

The spelling of 9861628 in words is "nine million, eight hundred sixty-one thousand, six hundred twenty-eight".