28006106 has 8 divisors (see below), whose sum is σ = 44480340. Its totient is φ = 13179328.

The previous prime is 28006093. The next prime is 28006129. The reversal of 28006106 is 60160082.

It can be written as a sum of positive squares in 2 ways, for example, as 26988025 + 1018081 = 5195^2 + 1009^2 .

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

It is a super-3 number, since 3×28006106³ (a number of 23 digits) contains 333 as substring.

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, 411821 + ... + 411888.

Almost surely, 2^28006106 is an apocalyptic number.

28006106 is a deficient number, since it is larger than the sum of its proper divisors (16474234).

28006106 is a wasteful number, since it uses less digits than its factorization.

28006106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 823728.

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 28006106 is about 5292.0795534459. The cubic root of 28006106 is about 303.6809686931.

Adding to 28006106 its reverse (60160082), we get a palindrome (88166188).

The spelling of 28006106 in words is "twenty-eight million, six thousand, one hundred six".