9816240 has 80 divisors (see below), whose sum is σ = 34783488. Its totient is φ = 2243328.

The previous prime is 9816229. The next prime is 9816253. The reversal of 9816240 is 426189.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 9816198 and 9816207.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1242 + ... + 4601.

Almost surely, 2^9816240 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9816240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17391744).

9816240 is an abundant number, since it is smaller than the sum of its proper divisors (24967248).

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

9816240 is a wasteful number, since it uses less digits than its factorization.

9816240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5866 (or 5860 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 9816240 is about 3133.0879336527. The cubic root of 9816240 is about 214.1156390178.

The spelling of 9816240 in words is "nine million, eight hundred sixteen thousand, two hundred forty".