13840120 has 32 divisors (see below), whose sum is σ = 35589600. Its totient is φ = 4745088.

The previous prime is 13840111. The next prime is 13840121. The reversal of 13840120 is 2104831.

It is a super-2 number, since 2×13840120² = 383097843228800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13840121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24435 + ... + 24994.

It is an arithmetic number, because the mean of its divisors is an integer number (1112175).

Almost surely, 2^13840120 is an apocalyptic number.

13840120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13840120 is an abundant number, since it is smaller than the sum of its proper divisors (21749480).

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

13840120 is a wasteful number, since it uses less digits than its factorization.

13840120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49447 (or 49443 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 13840120 is about 3720.2311756126. The cubic root of 13840120 is about 240.0932508002.

Adding to 13840120 its reverse (2104831), we get a palindrome (15944951).

The spelling of 13840120 in words is "thirteen million, eight hundred forty thousand, one hundred twenty".