13745140 has 24 divisors (see below), whose sum is σ = 29031912. Its totient is φ = 5466240.

The previous prime is 13745107. The next prime is 13745141. The reversal of 13745140 is 4154731.

It can be written as a sum of positive squares in 4 ways, for example, as 1648656 + 12096484 = 1284^2 + 3478^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13745141) 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, 1722 + ... + 5518.

It is an arithmetic number, because the mean of its divisors is an integer number (1209663).

Almost surely, 2^13745140 is an apocalyptic number.

13745140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13745140 is an abundant number, since it is smaller than the sum of its proper divisors (15286772).

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

13745140 is a wasteful number, since it uses less digits than its factorization.

13745140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3987 (or 3985 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 13745140 is about 3707.4438633646. The cubic root of 13745140 is about 239.5427637082.

Adding to 13745140 its reverse (4154731), we get a palindrome (17899871).

The spelling of 13745140 in words is "thirteen million, seven hundred forty-five thousand, one hundred forty".