28666126 has 4 divisors (see below), whose sum is σ = 42999192. Its totient is φ = 14333062.

The previous prime is 28666091. The next prime is 28666129. The reversal of 28666126 is 62166682.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 62166682 = 2 ⋅31083341.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28666129) 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 as a sum of consecutive naturals, namely, 7166530 + ... + 7166533.

It is an arithmetic number, because the mean of its divisors is an integer number (10749798).

Almost surely, 2^28666126 is an apocalyptic number.

28666126 is a deficient number, since it is larger than the sum of its proper divisors (14333066).

28666126 is a wasteful number, since it uses less digits than its factorization.

28666126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14333065.

The product of its digits is 41472, while the sum is 37.

The square root of 28666126 is about 5354.0756438437. The cubic root of 28666126 is about 306.0480864809.

The spelling of 28666126 in words is "twenty-eight million, six hundred sixty-six thousand, one hundred twenty-six".