9857428 has 36 divisors (see below), whose sum is σ = 21131040. Its totient is φ = 4000752.

The previous prime is 9857423. The next prime is 9857443. The reversal of 9857428 is 8247589.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9857423) 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 11 ways as a sum of consecutive naturals, for example, 2401 + ... + 5047.

Almost surely, 2^9857428 is an apocalyptic number.

9857428 is a gapful number since it is divisible by the number (98) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9857428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10565520).

9857428 is an abundant number, since it is smaller than the sum of its proper divisors (11273612).

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

9857428 is a wasteful number, since it uses less digits than its factorization.

9857428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2684 (or 2675 counting only the distinct ones).

The product of its digits is 161280, while the sum is 43.

The square root of 9857428 is about 3139.6541210777. The cubic root of 9857428 is about 214.4146906935.

The spelling of 9857428 in words is "nine million, eight hundred fifty-seven thousand, four hundred twenty-eight".