28107946 has 8 divisors (see below), whose sum is σ = 42853284. Its totient is φ = 13823520.

The previous prime is 28107929. The next prime is 28107971. The reversal of 28107946 is 64970182.

It can be written as a sum of positive squares in 2 ways, for example, as 21058921 + 7049025 = 4589^2 + 2655^2 .

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

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, 115075 + ... + 115318.

Almost surely, 2^28107946 is an apocalyptic number.

28107946 is a deficient number, since it is larger than the sum of its proper divisors (14745338).

28107946 is a wasteful number, since it uses less digits than its factorization.

28107946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230456.

The product of its (nonzero) digits is 24192, while the sum is 37.

The square root of 28107946 is about 5301.6927485474. The cubic root of 28107946 is about 304.0486201667.

The spelling of 28107946 in words is "twenty-eight million, one hundred seven thousand, nine hundred forty-six".