13855740 has 24 divisors (see below), whose sum is σ = 38796240. Its totient is φ = 3694848.

The previous prime is 13855727. The next prime is 13855747. The reversal of 13855740 is 4755831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13855747) 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, 115405 + ... + 115524.

It is an arithmetic number, because the mean of its divisors is an integer number (1616510).

Almost surely, 2^13855740 is an apocalyptic number.

13855740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13855740 is an abundant number, since it is smaller than the sum of its proper divisors (24940500).

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

13855740 is a wasteful number, since it uses less digits than its factorization.

13855740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230941 (or 230939 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 33.

The square root of 13855740 is about 3722.3299155233. The cubic root of 13855740 is about 240.1835401573.

Subtracting from 13855740 its reverse (4755831), we obtain a palindrome (9099909).

The spelling of 13855740 in words is "thirteen million, eight hundred fifty-five thousand, seven hundred forty".