10243840 has 72 divisors (see below), whose sum is σ = 25165728. Its totient is φ = 3993600.

The previous prime is 10243837. The next prime is 10243853. The reversal of 10243840 is 4834201.

It is a hoax number, since the sum of its digits (22) coincides with the sum of the digits of its distinct prime factors.

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, 67765 + ... + 67915.

It is an arithmetic number, because the mean of its divisors is an integer number (349524).

Almost surely, 2^10243840 is an apocalyptic number.

10243840 is a gapful number since it is divisible by the number (10) 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 10243840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12582864).

10243840 is an abundant number, since it is smaller than the sum of its proper divisors (14921888).

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

10243840 is an equidigital number, since it uses as much as digits as its factorization.

10243840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225 (or 211 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 10243840 is about 3200.5999437605. The cubic root of 10243840 is about 217.1805501114.

The spelling of 10243840 in words is "ten million, two hundred forty-three thousand, eight hundred forty".