8244840 has 64 divisors (see below), whose sum is σ = 24975360. Its totient is φ = 2177280.

The previous prime is 8244829. The next prime is 8244857. The reversal of 8244840 is 484428.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

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 = 8244798 and 8244807.

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, 14970 + ... + 15510.

It is an arithmetic number, because the mean of its divisors is an integer number (390240).

Almost surely, 2^8244840 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 8244840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12487680).

8244840 is an abundant number, since it is smaller than the sum of its proper divisors (16730520).

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

8244840 is a wasteful number, since it uses less digits than its factorization.

8244840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 682 (or 678 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 30.

The square root of 8244840 is about 2871.3829420682. The cubic root of 8244840 is about 202.0198653796.

The spelling of 8244840 in words is "eight million, two hundred forty-four thousand, eight hundred forty".