9855428 has 24 divisors (see below), whose sum is σ = 19256160. Its totient is φ = 4374720.

The previous prime is 9855413. The next prime is 9855437. The reversal of 9855428 is 8245589.

It is a super-2 number, since 2×9855428² = 194258922126368, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 713 + ... + 4496.

It is an arithmetic number, because the mean of its divisors is an integer number (802340).

Almost surely, 2^9855428 is an apocalyptic number.

It is an amenable number.

9855428 is a deficient number, since it is larger than the sum of its proper divisors (9400732).

9855428 is a wasteful number, since it uses less digits than its factorization.

9855428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5267 (or 5265 counting only the distinct ones).

The product of its digits is 115200, while the sum is 41.

The square root of 9855428 is about 3139.3355984985. The cubic root of 9855428 is about 214.4001886554.

The spelling of 9855428 in words is "nine million, eight hundred fifty-five thousand, four hundred twenty-eight".