11561028 has 12 divisors (see below), whose sum is σ = 26975760. Its totient is φ = 3853672.

The previous prime is 11561027. The next prime is 11561087. The reversal of 11561028 is 82016511.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 11560989 and 11561007.

It is not an unprimeable number, because it can be changed into a prime (11561021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 481698 + ... + 481721.

It is an arithmetic number, because the mean of its divisors is an integer number (2247980).

Almost surely, 2^11561028 is an apocalyptic number.

It is an amenable number.

11561028 is an abundant number, since it is smaller than the sum of its proper divisors (15414732).

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

11561028 is a wasteful number, since it uses less digits than its factorization.

11561028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 963426 (or 963424 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 24.

The square root of 11561028 is about 3400.1511731098. The cubic root of 11561028 is about 226.1164461126.

Adding to 11561028 its reverse (82016511), we get a palindrome (93577539).

The spelling of 11561028 in words is "eleven million, five hundred sixty-one thousand, twenty-eight".