8866240 has 56 divisors (see below), whose sum is σ = 21396960. Its totient is φ = 3499008.

The previous prime is 8866189. The next prime is 8866259. The reversal of 8866240 is 426688.

It is a super-2 number, since 2×8866240² = 157220423475200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 8866196 and 8866205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32826 + ... + 33094.

Almost surely, 2^8866240 is an apocalyptic number.

8866240 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 8866240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10698480).

8866240 is an abundant number, since it is smaller than the sum of its proper divisors (12530720).

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

8866240 is a wasteful number, since it uses less digits than its factorization.

8866240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 389 (or 379 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 34.

The square root of 8866240 is about 2977.6232132357. The cubic root of 8866240 is about 206.9727456786.

The spelling of 8866240 in words is "eight million, eight hundred sixty-six thousand, two hundred forty".