13550940 has 72 divisors (see below), whose sum is σ = 44274048. Its totient is φ = 3335040.

The previous prime is 13550909. The next prime is 13550941. The reversal of 13550940 is 4905531.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13550941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 556 + ... + 5235.

Almost surely, 2^13550940 is an apocalyptic number.

13550940 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 13550940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22137024).

13550940 is an abundant number, since it is smaller than the sum of its proper divisors (30723108).

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

13550940 is a wasteful number, since it uses less digits than its factorization.

13550940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5819 (or 5814 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 27.

The square root of 13550940 is about 3681.1601432157. The cubic root of 13550940 is about 238.4092715566.

The spelling of 13550940 in words is "thirteen million, five hundred fifty thousand, nine hundred forty".