13011860 has 24 divisors (see below), whose sum is σ = 27790560. Its totient is φ = 5116064.

The previous prime is 13011841. The next prime is 13011863. The reversal of 13011860 is 6811031.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13011863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4334 + ... + 6693.

It is an arithmetic number, because the mean of its divisors is an integer number (1157940).

Almost surely, 2^13011860 is an apocalyptic number.

13011860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13011860 is an abundant number, since it is smaller than the sum of its proper divisors (14778700).

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

13011860 is a wasteful number, since it uses less digits than its factorization.

13011860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11095 (or 11093 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 20.

The square root of 13011860 is about 3607.1955866019. The cubic root of 13011860 is about 235.2049517291.

Adding to 13011860 its reverse (6811031), we get a palindrome (19822891).

The spelling of 13011860 in words is "thirteen million, eleven thousand, eight hundred sixty".