13150640 has 40 divisors (see below), whose sum is σ = 30935520. Its totient is φ = 5198336.

The previous prime is 13150637. The next prime is 13150649. The reversal of 13150640 is 4605131.

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

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (13150649) 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, 6197 + ... + 8043.

It is an arithmetic number, because the mean of its divisors is an integer number (773388).

Almost surely, 2^13150640 is an apocalyptic number.

13150640 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 13150640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15467760).

13150640 is an abundant number, since it is smaller than the sum of its proper divisors (17784880).

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

13150640 is a wasteful number, since it uses less digits than its factorization.

13150640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1949 (or 1943 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 13150640 is about 3626.3811162094. The cubic root of 13150640 is about 236.0382012277.

Adding to 13150640 its reverse (4605131), we get a palindrome (17755771).

The spelling of 13150640 in words is "thirteen million, one hundred fifty thousand, six hundred forty".