13130856 has 128 divisors (see below), whose sum is σ = 39398400. Its totient is φ = 4043520.

The previous prime is 13130839. The next prime is 13130857. The reversal of 13130856 is 65803131.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (13130857) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 247726 + ... + 247778.

It is an arithmetic number, because the mean of its divisors is an integer number (307800).

Almost surely, 2^13130856 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13130856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19699200).

13130856 is an abundant number, since it is smaller than the sum of its proper divisors (26267544).

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

13130856 is a wasteful number, since it uses less digits than its factorization.

13130856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136 (or 126 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 13130856 is about 3623.6523012011. The cubic root of 13130856 is about 235.9197754707.

Adding to 13130856 its reverse (65803131), we get a palindrome (78933987).

The spelling of 13130856 in words is "thirteen million, one hundred thirty thousand, eight hundred fifty-six".