13050640 has 40 divisors (see below), whose sum is σ = 31169880. Its totient is φ = 5078016.

The previous prime is 13050617. The next prime is 13050641. The reversal of 13050640 is 4605031.

It can be written as a sum of positive squares in 4 ways, for example, as 1106704 + 11943936 = 1052^2 + 3456^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (13050641) 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, 756 + ... + 5164.

It is an arithmetic number, because the mean of its divisors is an integer number (779247).

Almost surely, 2^13050640 is an apocalyptic number.

13050640 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 13050640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15584940).

13050640 is an abundant number, since it is smaller than the sum of its proper divisors (18119240).

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

13050640 is a wasteful number, since it uses less digits than its factorization.

13050640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4459 (or 4453 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 13050640 is about 3612.5669543968. The cubic root of 13050640 is about 235.4383849578.

Adding to 13050640 its reverse (4605031), we get a palindrome (17655671).

The spelling of 13050640 in words is "thirteen million, fifty thousand, six hundred forty".