11428666 has 8 divisors (see below), whose sum is σ = 17162964. Its totient is φ = 5707680.

The previous prime is 11428649. The next prime is 11428667. The reversal of 11428666 is 66682411.

It can be written as a sum of positive squares in 2 ways, for example, as 11417641 + 11025 = 3379^2 + 105^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×11428666² = 261228813079112, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11428667) 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 3 ways as a sum of consecutive naturals, for example, 795 + ... + 4846.

Almost surely, 2^11428666 is an apocalyptic number.

11428666 is a deficient number, since it is larger than the sum of its proper divisors (5734298).

11428666 is a wasteful number, since it uses less digits than its factorization.

11428666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6656.

The product of its digits is 13824, while the sum is 34.

The square root of 11428666 is about 3380.6310061880. The cubic root of 11428666 is about 225.2501974004.

The spelling of 11428666 in words is "eleven million, four hundred twenty-eight thousand, six hundred sixty-six".