28063706 has 16 divisors (see below), whose sum is σ = 47507040. Its totient is φ = 12316080.

The previous prime is 28063699. The next prime is 28063709. The reversal of 28063706 is 60736082.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (28063709) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21356 + ... + 22631.

It is an arithmetic number, because the mean of its divisors is an integer number (2969190).

Almost surely, 2^28063706 is an apocalyptic number.

28063706 is a deficient number, since it is larger than the sum of its proper divisors (19443334).

28063706 is a wasteful number, since it uses less digits than its factorization.

28063706 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44029.

The product of its (nonzero) digits is 12096, while the sum is 32.

The square root of 28063706 is about 5297.5188531991. The cubic root of 28063706 is about 303.8890191038.

Adding to 28063706 its reverse (60736082), we get a palindrome (88799788).

The spelling of 28063706 in words is "twenty-eight million, sixty-three thousand, seven hundred six".