13130840 has 16 divisors (see below), whose sum is σ = 29544480. Its totient is φ = 5252320.

The previous prime is 13130839. The next prime is 13130857. The reversal of 13130840 is 4803131.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 164096 + ... + 164175.

It is an arithmetic number, because the mean of its divisors is an integer number (1846530).

Almost surely, 2^13130840 is an apocalyptic number.

13130840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13130840 is an abundant number, since it is smaller than the sum of its proper divisors (16413640).

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

13130840 is a wasteful number, since it uses less digits than its factorization.

13130840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 328282 (or 328278 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 13130840 is about 3623.6500934831. The cubic root of 13130840 is about 235.9196796476.

Adding to 13130840 its reverse (4803131), we get a palindrome (17933971).

The spelling of 13130840 in words is "thirteen million, one hundred thirty thousand, eight hundred forty".