8864240 has 80 divisors (see below), whose sum is σ = 25712640. Its totient is φ = 2760960.

The previous prime is 8864239. The next prime is 8864243. The reversal of 8864240 is 424688.

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

It is a junction number, because it is equal to n+sod(n) for n = 8864197 and 8864206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8864243) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5441 + ... + 6879.

It is an arithmetic number, because the mean of its divisors is an integer number (321408).

Almost surely, 2^8864240 is an apocalyptic number.

8864240 is a gapful number since it is divisible by the number (80) 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 8864240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12856320).

8864240 is an abundant number, since it is smaller than the sum of its proper divisors (16848400).

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

8864240 is a wasteful number, since it uses less digits than its factorization.

8864240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1470 (or 1464 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 32.

The square root of 8864240 is about 2977.2873559668. The cubic root of 8864240 is about 206.9571818988.

The spelling of 8864240 in words is "eight million, eight hundred sixty-four thousand, two hundred forty".