13840568 has 32 divisors (see below), whose sum is σ = 30002400. Its totient is φ = 5862912.

The previous prime is 13840559. The next prime is 13840571. The reversal of 13840568 is 86504831.

It is a super-2 number, since 2×13840568² = 383122645125248, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3596 + ... + 6372.

It is an arithmetic number, because the mean of its divisors is an integer number (937575).

Almost surely, 2^13840568 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 13840568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15001200).

13840568 is an abundant number, since it is smaller than the sum of its proper divisors (16161832).

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

13840568 is a wasteful number, since it uses less digits than its factorization.

13840568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2879 (or 2875 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 35.

The square root of 13840568 is about 3720.2913864374. The cubic root of 13840568 is about 240.0958413513.

The spelling of 13840568 in words is "thirteen million, eight hundred forty thousand, five hundred sixty-eight".