12028745 has 4 divisors (see below), whose sum is σ = 14434500. Its totient is φ = 9622992.

The previous prime is 12028739. The next prime is 12028759. The reversal of 12028745 is 54782021.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9259849 + 2768896 = 3043^2 + 1664^2 .

It is a cyclic number.

It is not a de Polignac number, because 12028745 - 2¹⁴ = 12012361 is a prime.

It is a Curzon number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1202870 + ... + 1202879.

It is an arithmetic number, because the mean of its divisors is an integer number (3608625).

Almost surely, 2^12028745 is an apocalyptic number.

It is an amenable number.

12028745 is a deficient number, since it is larger than the sum of its proper divisors (2405755).

12028745 is an equidigital number, since it uses as much as digits as its factorization.

12028745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2405754.

The product of its (nonzero) digits is 4480, while the sum is 29.

The square root of 12028745 is about 3468.2481168452. The cubic root of 12028745 is about 229.1255072453.

The spelling of 12028745 in words is "twelve million, twenty-eight thousand, seven hundred forty-five".