9857880 has 96 divisors (see below), whose sum is σ = 32432400. Its totient is φ = 2596608.

The previous prime is 9857849. The next prime is 9857891. The reversal of 9857880 is 887589.

9857880 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 49942 + ... + 50138.

Almost surely, 2^9857880 is an apocalyptic number.

9857880 is a gapful number since it is divisible by the number (90) 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 9857880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16216200).

9857880 is an abundant number, since it is smaller than the sum of its proper divisors (22574520).

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

9857880 is a wasteful number, since it uses less digits than its factorization.

9857880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 353 (or 346 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 45.

The square root of 9857880 is about 3139.7261027039. The cubic root of 9857880 is about 214.4179678823.

The spelling of 9857880 in words is "nine million, eight hundred fifty-seven thousand, eight hundred eighty".