13018856 has 8 divisors (see below), whose sum is σ = 24410370. Its totient is φ = 6509424.

The previous prime is 13018847. The next prime is 13018871. The reversal of 13018856 is 65881031.

13018856 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 12716356 + 302500 = 3566^2 + 550^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×13018856² = 338981223097472, which contains 22 as substring.

It is a plaindrome in base 15.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 813671 + ... + 813686.

Almost surely, 2^13018856 is an apocalyptic number.

It is an amenable number.

13018856 is a deficient number, since it is larger than the sum of its proper divisors (11391514).

13018856 is a wasteful number, since it uses less digits than its factorization.

13018856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1627363 (or 1627359 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 32.

The square root of 13018856 is about 3608.1651846887. The cubic root of 13018856 is about 235.2470978692.

Adding to 13018856 its reverse (65881031), we get a palindrome (78899887).

The spelling of 13018856 in words is "thirteen million, eighteen thousand, eight hundred fifty-six".