11428705 has 4 divisors (see below), whose sum is σ = 13714452. Its totient is φ = 9142960.

The previous prime is 11428699. The next prime is 11428717. The reversal of 11428705 is 50782411.

11428705 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50782411 = 2333 ⋅21767.

It can be written as a sum of positive squares in 2 ways, for example, as 3549456 + 7879249 = 1884^2 + 2807^2 .

It is not a de Polignac number, because 11428705 - 2⁵ = 11428673 is a prime.

It is a Duffinian number.

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, 1142866 + ... + 1142875.

It is an arithmetic number, because the mean of its divisors is an integer number (3428613).

Almost surely, 2^11428705 is an apocalyptic number.

It is an amenable number.

11428705 is a deficient number, since it is larger than the sum of its proper divisors (2285747).

11428705 is an equidigital number, since it uses as much as digits as its factorization.

11428705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2285746.

The product of its (nonzero) digits is 2240, while the sum is 28.

The square root of 11428705 is about 3380.6367743370. The cubic root of 11428705 is about 225.2504536201.

The spelling of 11428705 in words is "eleven million, four hundred twenty-eight thousand, seven hundred five".