13561028 has 24 divisors (see below), whose sum is σ = 25683840. Its totient is φ = 6228000.

The previous prime is 13561027. The next prime is 13561049. The reversal of 13561028 is 82016531.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a junction number, because it is equal to n+sod(n) for n = 13560988 and 13561006.

It is not an unprimeable number, because it can be changed into a prime (13561021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12533 + ... + 13571.

It is an arithmetic number, because the mean of its divisors is an integer number (1070160).

Almost surely, 2^13561028 is an apocalyptic number.

It is an amenable number.

13561028 is a deficient number, since it is larger than the sum of its proper divisors (12122812).

13561028 is a wasteful number, since it uses less digits than its factorization.

13561028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1307 (or 1305 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 13561028 is about 3682.5301084988. The cubic root of 13561028 is about 238.4684181585.

Adding to 13561028 its reverse (82016531), we get a palindrome (95577559).

The spelling of 13561028 in words is "thirteen million, five hundred sixty-one thousand, twenty-eight".