11028145 has 4 divisors (see below), whose sum is σ = 13233780. Its totient is φ = 8822512.

The previous prime is 11028131. The next prime is 11028161. The reversal of 11028145 is 54182011.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54182011 = 13 ⋅4167847.

It can be written as a sum of positive squares in 2 ways, for example, as 5094049 + 5934096 = 2257^2 + 2436^2 .

It is a cyclic number.

It is not a de Polignac number, because 11028145 - 2⁹ = 11027633 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1102810 + ... + 1102819.

It is an arithmetic number, because the mean of its divisors is an integer number (3308445).

Almost surely, 2^11028145 is an apocalyptic number.

It is an amenable number.

11028145 is a deficient number, since it is larger than the sum of its proper divisors (2205635).

11028145 is an equidigital number, since it uses as much as digits as its factorization.

11028145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2205634.

The product of its (nonzero) digits is 320, while the sum is 22.

The square root of 11028145 is about 3320.8650981333. The cubic root of 11028145 is about 222.5875260581.

The spelling of 11028145 in words is "eleven million, twenty-eight thousand, one hundred forty-five".